関東化学株式会社 List of Products and Services

"Related products for turbidity measurement" are reagents used in testing methods targeting the water quality standard item "turbidity." Traditionally, kaolin standard solutions were used for turbidity measurement; however, due to the increasing precision of measuring devices and the need to address pathogenic microorganisms such as Cryptosporidium, measurements in low turbidity ranges, such as 0.1 NTU, are now required. The water quality standards for drinking water allow for measurements in low turbidity ranges, and polystyrene-based particle suspensions have been adopted as turbidity standard solutions with less variability between batches compared to kaolin. Measurement methods include visual turbidity methods, transmitted light measurement methods, scattered (reflected) light measurement methods, integrating sphere photometric methods, and particle counting methods, which are used for device calibration and as turbidity standard series. 【Product Lineup】 ≫ Polystyrene Turbidity standard solution II for water quality testing (100 NTU) ≫ Formazin Formazin standard solution (400 NTU) ≫ Kaolin Turbidity standard solution for turbidity testing (100 NTU) Turbidity standard solution for turbidity testing (1000 NTU) In addition to these, we offer a variety of standard products for water quality testing. ◇ Pesticide standard solutions ◇ Metal analysis standard solutions …etc. For more details, please download the catalog, refer to our published page, or feel free to contact us.

• Chemicals
• Water quality testing

"Colorimetric Measurement Related Products" are reagents used in testing methods targeting the water quality standard item "color." Our company has traditionally offered reagents and standard products based on water quality standards. The "Color Standard Solution (1000 degrees)" is prepared by dissolving potassium chloroplatinate and cobalt chloride in hydrochloric acid. This stock solution is then step-diluted to create a color standard series, which is tested using colorimetric methods and transmittance measurement methods. In addition to this, our company also handles various standard products for water quality testing. ◇ Pesticide standard solutions ◇ Standard solutions for volatile organic compound analysis ◇ Standard solutions for disinfection byproduct analysis ◇ Standard solutions for phenolic compound analysis ◇ Standard solutions for surfactant analysis ◇ Standard solutions for musty odor analysis ◇ Other organic compound standard solutions ◇ Phthalate ester standard products ◇ Standard solutions for metal analysis ◇ Standard solutions for ion chromatography ◇ Standard solutions for turbidity, color, and pH testing For more details, please refer to our company’s published page or feel free to contact us.

• Chemicals

The "Ion Chromatography Standard Solution" is an ion mixed standard solution and ion standard solution based on water quality standards. Due to a partial revision of the ministerial ordinance regarding water quality standards, it has become possible to use standard stock solutions that are accompanied by a certificate based on the Measurement Act and have the same concentration as those specified in the respective tables. We will continue to offer products that comply with testing methods. In recent years, the inspection of non-metal ions has become mainstream with the widespread use of simultaneous analysis using IC (Ion Chromatography). Our company provides various non-metal ion mixed standard solutions that comply with different regulations. 【Product Lineup】 ◆ Cation Mixed Standard Solution ◆ Anion Mixed Standard Solution ◆ JCSS Cation Standard Solution ◆ JCSS Anion Standard Solution ◆ Elution Solution In addition to these, our company also handles various standard products for water quality testing. ◇ Pesticide Standard Solution ◇ Volatile Organic Compound Analysis Standard Solution ◇ Disinfection Byproduct Analysis Standard Solution ◇ Phenolic Compound Analysis Standard Solution ◇ Surfactant Analysis Standard Solution ◇ Musty Odor Analysis Standard Solution ◇ Phthalate Ester Analysis Standard Product …etc For more details, please download the catalog or feel free to contact us.

• Chemicals

We offer a range of metal mixed standard solutions and metal standard solutions based on water quality standards. Due to a partial amendment of the ministerial ordinance regarding water quality standards, it has become possible to use standard stock solutions that are accompanied by a certificate based on the Measurement Act and have the same concentration as those specified in the respective tables. We will continue to provide products that comply with testing methods. In recent years, our selection of standard solutions based on the Measurement Act traceability system (JCSS) has expanded, fundamentally supporting the reliability of many testing and calibration results. These JCSS standard solutions are not only traceable to national standards but are also used globally in a wide range of fields as standard solutions of internationally accepted quality. In addition to these, we handle various standard materials for water quality testing, including: ◇ Pesticide standard solutions ◇ Standard solutions for volatile organic compound analysis ◇ Standard solutions for disinfection byproduct analysis ◇ Standard solutions for phenolic compound analysis ◇ Standard solutions for surfactant analysis ◇ Other organic compound standard solutions ◇ Standard materials for phthalate ester analysis ◇ Standard solutions for ion chromatography ◇ Standard solutions for turbidity, color, and pH testing etc. For more details, please download our catalog or feel free to contact us.

• Chemicals
• Water quality testing

We offer standard products and related reagents used in testing methods targeting "phthalate esters" as part of water quality standards. 【Product Lineup】 ◆ Mixed standard solution of phthalate esters (9 types) ◆ Mixed standard solution II of phthalate esters (9 types) ◆ Mixed internal standard solution of phthalate esters (5 types) ◆ Standard stock solution of di-2-ethylhexyl phthalate ◆ Standard product of benzyl n-butyl phthalate ◆ Benzyl n-butyl phthalate-3,4,5,6-d4 ◆ Standard product of di-n-butyl phthalate ◆ di-n-butyl phthalate-3,4,5,6-d4 ◆ Standard product of di-cyclohexyl phthalate ◆ Standard product of di-2-ethylhexyl adipate ◆ di-2-ethylhexyl adipate-d8 ◆ Standard product of di-2-ethylhexyl phthalate ◆ di-2-ethylhexyl phthalate-3,4,5,6-d4 ◆ diethyl phthalate-3,4,5,6-d4 ◆ Standard product of di-n-pentyl phthalate ◆ Standard product of di-n-propyl phthalate ◆ Phenanthrene-d10 ◆ Standard stock solution of phenanthrene-d10 We also handle various standard products for water quality testing. For more details, please download the catalog or feel free to contact us.

• Chemicals
• Water quality testing

We provide standard solutions and related reagents for organic compounds that are subject to water quality standards, utilized in various testing methods. 【Product Lineup】 ◆ Acrylamide monomer standard solution ◆ 1,3-Butadiene standard solution ◆ N,N-Dimethylaniline standard solution ◆ Microcystin LR standard solution ◆ Microcystin RR standard solution ◆ Microcystin YR standard solution ◆ Perfluoro-n-[13C8]octanoic acid ◆ Perfluoro-n-octanoic acid ◆ Perfluoro-[13C8]octanesulfonic acid sodium salt ◆ Perfluoro-1-octanesulfonic acid sodium salt ◆ Styrene monomer standard solution ◆ Vinyl acetate monomer standard solution ◆ Vinyl chloride standard solution ◆ Aniline standard ◆ Dibutyltin dichloride standard ◆ Dibutyltin oxide standard ◆ 17β-Estradiol standard ◆ Quinoline standard ◆ 2,4-Toluenediamine standard ◆ 2,6-Toluenediamine standard ◆ Tributyltin oxide standard ◆ 1,2,3-Trichlorobenzene standard In addition to these, we handle a variety of standard solutions for water quality testing. For more details, please feel free to contact us.

• Chemicals
• Water quality testing

The "Mold Odor Substance Analysis Standard Solution" is a standard product based on water quality standards. We provide standard products and related reagents used in testing methods targeting the water quality standard item "mold odor substances." 【Product Lineup】 ◆ Mixed standard solution of 2 types of mold odor substances for JCSS chemical analysis (for water quality testing) ◆ Geosmin standard stock solution ◆ 2-Methylisoborneol standard stock solution ≫ Internal Standards ◆ Geosmin-d3 standard stock solution ◆ 2,4,6-Trichloroanisole-d3 standard stock solution ◆ 2,4,6-Trichloroanisole-d5 standard stock solution We offer a lineup that can be selected according to your analysis needs. In addition, we handle various other standard products for water quality testing. ◇ Pesticide standard solutions ◇ Standard solutions for volatile organic compound analysis ◇ Standard solutions for disinfection byproduct analysis ◇ Standard solutions for phenolic compound analysis ◇ Standard solutions for surfactant analysis ◇ Other organic compound standard solutions ◇ Phthalate ester standard products ◇ Standard solutions for metal analysis ◇ Standard solutions for ion chromatography ◇ Standard solutions for turbidity, color, and pH testing For more details, please download the catalog or feel free to contact us.

• Chemicals
• Water quality testing

We handle standard products and related reagents used in testing methods for anionic surfactants and nonionic surfactants, which are water quality standard items. We have commercialized a ready-to-use mobile phase for LAS analysis (HPLC-FL) as specified by the Ministry of Health, Labour and Welfare for drinking water testing methods. Linear alkylbenzene sulfonates (LAS) are one of the detergent components and are considered an indicator of pollution in drinking water quality standards due to their role as anionic surfactants that cause foaming. 【Features of the Ready-to-Use Mobile Phase】 ■ Ready to Use ■ Reduced reagent management ■ Cost reduction for waste reagents 【Product Lineup】 ＞ Anionic surfactant standard products and related items ◆ LAS standard stock solution ◆ 0.1 mol/L sodium perchlorate - acetonitrile/water (65:35) ＞ Nonionic surfactant standard products and related items ◆ Heptaoxyethylenedodecyl ether standard solution ◆ Sodium dodecyl sulfate ◆ 0.01 mol/L sodium tetrafluoroborate solution ◆ Tetradecyl dimethyl benzyl ammonium chloride We also handle solid phase columns and LC columns necessary for other analyses. For more details, please download the catalog or feel free to contact us.

• Chemicals

The "Standard Solution for Phenolic Compounds Analysis" is a standard product based on water quality standards. Our company offers reagents and standard products based on water quality standards. We provide standard products and related reagents used in testing methods targeting the water quality standard items "Phenolic Compounds" and "Alkylphenols." 【Product Lineup】 ◆ Phenolic Compounds - Mixed standard solution of 6 types of phenolic compounds - Acenaphthene-d10 standard stock solution - Phenol standard stock solution - 2,4,6-Trichlorophenol standard stock solution - 2-Chlorophenol standard product - 4-Chlorophenol standard product - 2,4-Dichlorophenol standard product - 2,6-Dichlorophenol standard product - Phenol - 2,4,6-Trichlorophenol standard product ◆ Alkylphenols - Mixed standard stock solution II for alkylphenols (13 types) - Bisphenol A standard product - Bisphenol A-d16 - 4-n-Nonylphenol standard product - 4-n-Nonylphenol-2,3,5,6-d4 - 4-Nonylphenol In addition to these, our company handles various standard products for water quality testing. For more details, please download the catalog or feel free to contact us.

• Chemicals

This product uses an indicator organic substance and does not contain cobalt chloride. Therefore, it is an environmentally friendly product that is safe to use. The color changes with the moisture absorption rate, making it visually easy to understand. Additionally, by drying it at approximately 120°C for 2 hours, the color returns to its state before moisture absorption, allowing for repeated use. For more details, please refer to the catalog below.

• Drying Equipment
• Chemicals

The Shikakurin series has excellent cleaning properties and biodegradability, and is a liquid type of detergent. It contains no phosphates and has a low nitrogen content, contributing to the reduction of nitrogen and phosphorus levels in wastewater, which are expected to be subject to stricter regulations. For usage instructions and differentiation of each product, please refer to the catalog below.

• Cleaning agents
• Chemicals

The "Standard Solution for Disinfection By-Products Analysis" is a standard product based on water quality standards. We provide related reagents such as standard products and internal standard solutions for the disinfection by-products that are subject to water quality standards, including "haloacetic acids," "haloacetonitriles," and "aldehydes." 【Product Lineup】 ◆ Haloacetic Acids Haloacetic Acid 4-Component Mixed Standard Solution Haloacetic Acid Mixed Standard Stock Solution II (9 types) Bromoacetic Acid Standard Stock Solution Bromo-Chloroacetic Acid Standard Solution Chloroacetic Acid Standard Stock Solution Dibromoacetic Acid Standard Product ◆ Haloacetonitriles Haloacetonitrile Mixed Standard Stock Solution (3 types) Haloacetonitrile Mixed Standard Stock Solution II (7 types) Chloroform Standard Stock Solution Dibromoacetonitrile Standard Stock Solution Bromo-Chloroacetonitrile Standard Product Dichloroacetonitrile Standard Stock Solution Trichloroacetonitrile Standard Stock Solution ◆ Aldehydes PFBOA-Aldehyde Mixed Standard Solution (7 types) 1-Chlorodecane Standard Stock Solution Formaldehyde Standard Stock Solution PFBOA-Acetaldehyde Standard Product …etc. Many more are available. For more details, please download the catalog or feel free to contact us.

• Chemicals

We offer a range of "volatile organic compound mixed standard solutions," "internal standard solutions," and "volatile organic compound standard solutions" based on water quality standards. With the recent partial revision of the ministerial ordinance regarding water quality standards, it is now possible to use standard stock solutions that come with a certificate based on the Measurement Act and have the same concentration as those specified in the respective tables. We will continue to stock products that comply with testing methods. As a JCSS registered business, we provide various standard solutions for water quality testing based on the measurement law traceability system. 【Product Lineup】 ◆ Volatile Organic Compound Mixed Standard Solution ◆ Internal Standard Solution ◆ Volatile Organic Compound Standard Solution This lineup allows you to choose according to your analysis needs. In addition, we handle various other standard products for water quality testing. ◇ Pesticide Standard Solutions ◇ Disinfection Byproduct Analysis Standard Solutions ◇ Phenol Analysis Standard Solutions ◇ Surfactant Analysis Standard Solutions ◇ Musty Odor Analysis Standard Solutions ◇ Phthalate Ester Analysis Standard Products ◇ Metal Analysis Standard Solutions ◇ Turbidity, Color, and pH Testing Standard Solutions …etc. For more details, please download the catalog or feel free to contact us.

• Chemicals

Molecular sieves are crystalline zeolites and crystalline materials composed of aluminosilicates. They have fine pores within the crystals, and their crystalline structure and adsorption properties change depending on their chemical composition. Utilizing this functionality, they are used in various applications such as catalysts, desiccants, adsorbents, and ion exchangers. Recently, they have been researched in many fields as materials for environmental improvement, as well as for magnetic, optical, and electrical functions. Our company offers "Molecular Sieves (3A, 4A, 5A, 13X) 1/16 (pellet type)." For more details, please refer to the catalog.

• Chemicals

The "Pesticide Standard Solution" provides pesticide mixed standard solutions with compositions tailored to each testing method. The Water Supply Act establishes "water quality standard items" to ensure the safety of drinking water. To complement these water quality standards, water quality management target items have been set, which include pesticides. Among these, Attachment Method 20-2 allows for the simultaneous analysis of approximately 200 types of pesticides and pesticide isomers using the LC/MS method. The preparation of the pesticide mixed standard solution used during this process can be burdensome for users, so we offer a pesticide mixed standard solution that combines as many types of pesticides as possible for convenience. 【Product Lineup】 ◆ Pesticide Mixed Standard Solution for GC and GC/MS ◆ Pesticide Mixed Standard Solution for LC and LC/MS 【Mixing, Combination, and Concentration】 We select combinations that comply with the most common analytical conditions or official methods. Therefore, the mixed composition is optimal for recovery tests and screening analyses according to official methods, making trace testing easy. We conduct analyses including stability tests and have a robust quality assurance system that includes concentration guarantees and expiration date settings. For more details, please download the catalog or feel free to contact us.

• Chemicals

The "Metal Mixed Standard Solution" is a multi-element analysis reagent that can be used in various analyses. Traditionally, quantitative and qualitative analyses were performed for individual elements using methods such as colorimetry and atomic absorption spectrometry. However, in recent years, with the advancement of instrumental analysis, simultaneous analysis using ICP-AES (Inductively Coupled Plasma Atomic Emission Spectrometry) and ICP-MS (Inductively Coupled Plasma Mass Spectrometry) has been implemented. Additionally, simultaneous testing methods have become mainstream in various testing methods, leading to a demand for various mixed standard solutions. Our company offers a range of metal mixed standard solutions to meet your needs. 【Product Lineup】 ◆ JCSS Compliant Metal Mixed Standard Solution 14 types mixed, compliant with the Water Quality Standards (attached documents 5 and 6). ◆ Metal Mixed Standard Solution Available in various combinations. JIS K0101 and K0102 compliant options are also available. ◆ ICP Mixed Standard Solution Available in various combinations. Options for RoHS compliance, equipment tuning, and measurement of metal impurities in pharmaceuticals according to ICH Q3D are available. In addition, our company handles a wide range of metal analysis reagents, non-metal ion mixed standard solutions, leaching solutions, and more, all guaranteed for many items. For more details, please download the catalog or feel free to contact us.

• Chemicals

Our company offers a wide range of "standard solutions and standard stock solutions" that serve as benchmarks for measuring the concentration of various metals. These are recommended for trace metal measurements in various fields. In recent years, we have expanded our selection of standard solutions based on the Measurement Law Traceability System (JCSS), which fundamentally supports the reliability of many testing and calibration results. These JCSS standard solutions are not only traceable to national standards but are also used globally as high-quality standard solutions accepted internationally. 【Measurement Law Traceability System】 This system promotes the establishment of high-precision measurement standards and facilitates the smooth supply of measurement standards that meet the needs of the industry. Measurement standards calibrated and supplied by registered businesses (JCSS registered businesses) are externally proven to be connected to national standards. Our company supplies standard solutions that are traceable to national standards as a "JCSS registered business," including various types of pH standard solutions, metal standard solutions, and non-metal ion standard solutions. We also issue certificates bearing the JCSS mark as proof of reliability, fundamentally supporting the credibility of various testing and calibration results. For more details, please download our catalog or feel free to contact us.

• Chemicals

The standard substances for capacity analysis specified in JIS K 8005 are widely used as reference materials in various fields, including pharmaceuticals and food, for chemical analyses such as neutralization titration, redox titration, complexometric titration, and precipitation titration. The certification documents for certified items include a certified purity value with an associated "uncertainty," making them reliable standard substances for use. The standard substance producer certification program is based on ISO Guide 34 (General requirements for the competence of reference material producers) and ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories), certifying the capabilities of standard substance producers. Our company obtained certification from IAJapan in November 2009 as the first private entity. 【Product Lineup】 ◆ Zinc ◆ Ammonium sulfate ◆ Sodium carbonate ◆ Copper ◆ Potassium hydrogen phthalate ◆ Sodium fluoride ◆ Sodium oxalate ◆ Sodium chloride ◆ Potassium dichromate ◆ Potassium iodate ◆ Standard solution for electrical conductivity measurement For more details, please download the catalog or feel free to contact us.

• Chemicals

"Standard substances" are important reagents that serve as a "ruler" during measurements. Our company is a "JCSS registered business" for various types of pH standard solutions, metal standard solutions, non-metal ion standard solutions, and volatile organic compound standard solutions. Additionally, we are certified as an international MRA-compliant business by IAJapan, which is a member of the mutual recognition agreements (MRA) of ILAC (International Laboratory Accreditation Cooperation) and APLAC (Asia-Pacific Laboratory Accreditation Cooperation), thereby fundamentally supporting the reliability of various testing and calibration results. Our standard solutions come with a certificate bearing the symbol mark of "International MRA-compliant JCSS certified business," indicating that these standard solutions are of a quality accepted internationally. The certificate also specifies the "uncertainty." 【Product Lineup】 ◆ pH standard solutions ◆ Metal standard solution 1000 mg/L ◆ Metal standard solution 100 mg/L ◆ Metal mixed standard solution ◆ Non-metal ion standard solution 2000 mg/L ◆ Non-metal ion standard solution 1000 mg/L ◆ Non-metal ion standard solution 100 mg/L ◆ Organic compound standard solution ◆ Organic compound mixed standard solution For more details, please download the catalog or feel free to contact us.

• Chemicals

At Kanto Chemical, we handle products from the General Incorporated Foundation Chemical Substance Evaluation and Research Organization. We would like to introduce a collection of CERI's high-performance column catalogs. 【Catalogs】 ◇ LC Column Catalog L-column 3 Achieving both exceptional chemical durability and top-level low adsorption! Introducing unparalleled high-performance columns. ◇ LC Column Catalog L-column series Introducing next-generation high-performance columns brought about by state-of-the-art end-capping technology. ◇ LC Column Catalog UHPLC Columns Introducing columns suitable for UHPLC using fine particle fillers with a particle size of around 2μm. ◇ LC Column Catalog L-column Micro Introducing nano and micro columns with an inner diameter of 0.075 to 0.3 mm. ◇ LC Column Catalog Metal-Free Columns Introducing columns recommended for the analysis of samples that are easily affected by metals. ◇ LC Column Catalog Wide Pore Columns Introducing columns for peptide and protein analysis based on high-purity silica gel with a pore diameter of 30nm. ◇ G-column Catalog Introducing columns that combine the ease of use of packed columns with the separation performance of capillary columns.

• Chemicals

The "L-column3" is a high-performance HPLC column manufactured and sold by the Chemical Evaluation and Research Institute (CERI), a general incorporated foundation. The "L-column3" features newly developed PCS silica (Perfect Chemical Stable Silica) with very high alkali resistance and enhanced durability through advanced end-capping, significantly improving the chemical durability of the packing material (acid resistance, alkali resistance), making it an all-around column. 【Features】 ■ High alkali resistance, usable from pH 1 to 12 ■ Top-class low adsorption for all types of analyses ■ The ability to freely select the pH of the eluent improves separation and peak shape ■ Stable analysis even with 100% aqueous eluents 【New Products】 ◇ High-pressure column L-column3 HP type ◇ Semi-preparative column L-column3 For more details, please download the catalog or feel free to contact us.

• Chemicals

Our company sells the PF-KANTO and PH-KANTO series as dedicated reagents for the Hitachi high-speed amino acid analyzers LA8080 and L-8900. The PF-KANTO set is for biological fluid analysis, while the PH-KANTO set is for protein hydrolysate analysis. Each set consists of four types of buffer solutions and one type of column regeneration solution (a total of five types), containing two each of PF-1 and PF-4, or PH-1 and PH-4, for a total of seven bottles. For more details, please refer to the catalog below. Please also consider using our set products. ◆ Buffer solution for biological fluid analysis: PF-KANTO set ◆ Buffer solution for protein hydrolysate analysis: PH-KANTO set We also offer individual buffer solutions that can be purchased separately.

• Chemicals
• Analytical Equipment and Devices

The potassium chloride for infrared spectroscopic analysis that we are currently selling is a white powder, similar to the potassium bromide we have traditionally sold, and is easy to handle. Additionally, we guarantee all items of the Japanese Industrial Standards (JIS) reagent special grade, so you can use it with confidence. For more details, please refer to the catalog below.

• Chemicals

The "Aqualight" series is a reagent developed for Karl Fischer measurement, starting with HIRANUMA's moisture measurement devices "Volumetric Method: AQV/MOIVO Series" and "Coulometric Method: AQ/MOICO Series." In the 18th revision of the Japanese Pharmacopoeia, the moisture measurement method (Karl Fischer method) has been significantly revised. Based on the premise that appropriate moisture measurement can be confirmed in conformity tests, it has become possible to flexibly use commercially available moisture measurement reagents, taking into account the solubility of samples and potential interference with the Karl Fischer reaction. For details on each product, please refer to the catalog.

• Chemicals

We sell the following products as reagents specifically for the NP600 automatic measurement device for total nitrogen and total phosphorus manufactured by Yokogawa Electric Corporation. Additionally, we offer a variety of standard solutions that serve as calibration span solutions, allowing for the adjustment of nitrogen and phosphorus concentrations in various ways. Please use them together. 【Related Products】 ◆ Nitrogen Standard Solution 100mL ◆ Phosphorus Standard Solution 100mL ◆ Distilled Water 500mL 20L

• Chemicals

The "Dr. Sick House/Formaldehyde Test Strip" is a test strip that allows for the simple and rapid detection of formaldehyde in indoor air. It can be evaluated by placing the test strip indoors for about 5 to 10 hours. Formaldehyde, considered one of the causative substances of "Sick House Syndrome," is widely used in building materials, wallpaper, paint materials, and household goods, with the emission into indoor air being a major concern. The Ministry of Health, Labour and Welfare has provided guideline values for indoor formaldehyde concentration (0.1 mg/m3 or below for a 30-minute average, approximately 80 ppb), and the Ministry of Land, Infrastructure, Transport and Tourism has revised building standards, among other measures, to reduce formaldehyde levels from various sectors, including public and private. For more details, please download the catalog or feel free to contact us.

• Chemicals
• Hazardous material processing

The "Rapid DPD Reagent Series" is a product that allows for the simplified one-step implementation of the DPD method, which is a representative testing method for residual chlorine in accordance with the Water Supply Act and drinking water testing methods. "Rapid DPD Reagent Series" (powder and tablet types) The Rapid DPD reagent is a simplified analytical reagent prepared based on the principles of the DPD method, designed to streamline the operation into one step. By simply dissolving a fixed amount per 10 mL of sample water, it is possible to easily measure free residual chlorine using various commercially available measuring devices. We offer four types (individually packaged and tablet) to suit different measurement sites and purposes. Please consider using it for simple residual chlorine measurement. *The Rapid DPD reagent is a simplified analytical reagent for measuring residual chlorine, and it provides results comparable to those obtained by official methods, making it suitable for measuring free residual chlorine in drinking water and similar applications. "Rapid DPD Liquid" (liquid type) The Rapid DPD Liquid is a one-component reaction reagent that allows for easy measurement of free residual chlorine by simply adding a specified amount per 10 mL of sample water. For more details, please download the catalog or feel free to contact us.

• Chemicals
• Water quality testing

The "RQ Flex" is a palm-sized reflective photometer that uses a dedicated test paper called "ReflectQuant" for a simple analysis system. It can easily and quickly measure the concentrations of various components in sample solutions, such as nutrients like nitrogen, phosphorus, and potassium found in soil and crops, as well as vitamin C in beverages and ammonium in wastewater. It can be used in a wide range of fields, including nutrient diagnostics for soil and crops, as well as component analysis for food, beverages, and factory wastewater. Please contact us if you have any requests for various applications. 【Features】 ■ Supports multi-parameter measurement with one device Can measure approximately 30 items, including metals, non-metals, and organic substances. ■ Pocket-sized and portable Compact size makes it suitable for measurements in the field. ■ Saves time and costs with simple operation More convenient than advanced equipment analysis, allowing anyone to perform analysis in a short time. ■ Accurate and high-precision results By performing two measurements simultaneously with one operation and displaying the average value, more accurate analysis results can be obtained. ■ High correlation with equipment analysis High correlation with ion chromatography has been confirmed. For more details, please download the catalog or feel free to contact us.

• Chemicals
• Soil testing

The "Pack Test Series" manufactured by Kyoritsu Chemical-Check Lab. Co., Ltd. is the simplest water quality measuring device. It is a testing kit that allows for easy water quality measurement by sucking the sample water into a tube containing reagents and comparing the color of the water after the reaction time with a standard color. It can be applied not only to environmental water such as groundwater, industrial water, and industrial wastewater management but also to leaching tests under soil contamination countermeasure laws. 【Examples of Use】 ■ Drinking water testing (well water, drinking water, water tank inspections, etc.) ■ Educational materials (science experiments, food inspections, etc.) ■ Process management, wastewater management (water usage management, residual inspections, etc.) ■ Environmental testing (water quality testing of rivers and lakes, hot spring surveys, etc.) ■ Agriculture (hydroponic nutrient solution management, agricultural water testing, etc.) Additionally, we also offer digital pack tests. We have portable multi-parameter water quality meters and handheld single-parameter water quality meters available. For more details, please download the catalog or feel free to contact us.

• Chemicals
• Water quality testing

We offer a variety of products that comply with the standards for quasi-drugs (Gai Gen Ki). Additionally, we can accommodate requests for the addition of testing items as needed. Please consider our products as ingredients for quasi-drugs, cosmetics, etc. *For more details and various products, please refer to the brochure below.

• Chemicals

This catalog summarizes standard solutions related to pharmaceutical testing. ◆Metal Standard Solutions◆ These are metal standard solutions prepared at specified concentrations in accordance with the Japanese Pharmacopoeia. The concentration values are based on MRA JCSS compliant products that are traceable to national standards. ◆Mixed Standard Solutions for ICP Analysis◆ These are mixed standard solutions containing seven elements (As, Cd, Pb, Hg, Co, V, Ni) that are subject to the elemental impurity guidelines for pharmaceuticals (ICH Q3D). ◆MRA JCSS Compliant Standard Solutions◆ We supply standard solutions that are traceable to national standards and issue certificates bearing the JCSS mark as proof of reliability. ◆Standard Solutions for Volumetric Analysis◆ These are standard solutions for volumetric analysis with guaranteed concentrations through preparation and standardization in accordance with the Japanese Pharmacopoeia. ◆Color Comparison Solutions◆ We provide comparison solutions of cobalt chloride, iron chloride, and copper sulfate. The sulfuric acid for the sulfuric acid color test is a diluted solution prepared to comply with the reagent standards of JIS, the Japanese Pharmacopoeia, and the United States Pharmacopeia. In addition to the above, we also offer products related to general testing methods of the Japanese Pharmacopoeia. For more details, please refer to the catalog below.

• Chemicals

This is a high-purity solvent for pharmaceutical manufacturing that complies with the Japanese Pharmacopoeia (JP) or Pharmaceutical Additives Standards (JPE), the United States Pharmacopeia (USP), and the European Pharmacopoeia (EP). It can be used for various applications such as spray drying and film coating. You can choose the packaging based on the frequency and quantity of use by the user. Bulk supply via tanker is also available. Please note that the manufacturing management does not comply with GMP. For each product, please refer to the brochure below.

• Chemicals

The RoHS Directive is a directive from the European Union (EU) regarding the restriction of the use of certain hazardous substances in electrical and electronic equipment. Until now, we have been releasing standards compliant with RoHS, but with the revised RoHS Directive (RoHS 2.0) that came into effect on July 22, 2019, the number of restricted substances has increased from 6 to 10. As a result of this directive, we have released RoHS 2 compliant standards that include 4 additional phthalate esters. [List of regulated substances under the revised RoHS Directive] Cadmium Lead Hexavalent chromium Mercury Polybrominated diphenyl ethers Polybrominated diphenyl Di-2-ethylhexyl phthalate Dibutyl phthalate Butyl benzyl phthalate Diisobutyl phthalate Similar to the previous RoHS compliant standards, we have added the 10 regulated substances of RoHS 2.0 as standard items in the special grade standards. Additionally, the guaranteed values are set to be less than 1/10 to 1/100 of the regulatory values. In addition to mixed standard solutions and standard materials for environmental analysis, we also handle JCSS compliant standard solutions and certified standard materials. Please choose according to your analysis needs. For more details, please download the catalog or feel free to contact us.

• Chemicals

In the "Regulations for the Enforcement of the Law Concerning the Assurance of Quality of Volatile Oil, etc.," the addition of biodiesel fuel to diesel is permitted. Currently, there are two types of diesel: "diesel with added BDF" and "diesel without added BDF," and their standard values and testing methods are established. Our company offers products that can be used for these tests. 【Product Lineup】 ◆ Reagents related to the determination of the volatility of petroleum products (JIS K 2254) ◆ Reagents related to the neutralization value testing method for petroleum products and lubricants (JIS K 2501) ◆ Reagents related to the measurement of oxidation products in volatile oil ◆ Reagents for standard analysis methods for diesel identification using coumarin ◆ Reagents related to the determination of octane number, cetane number, and cetane index for petroleum products (JIS K 2280) ◆ Reagents related to aviation lubricant testing methods (JIS K 2503) ◆ Reagents for testing sulfur content in crude oil and petroleum products (JIS K 2541) ◆ Reagents related to the determination of moisture in crude oil and petroleum products (JIS K 2257-2, 2257-3) ◆ Reagents for FIA analysis We also have dedicated HPLC columns, standard solutions, ASTM D-6584, FAME, etc. For more details, please download the catalog or feel free to contact us.

• Chemicals

The "wetting tension test mixed solution" is a test solution based on the plastic-film and sheet-wetting tension test method (JIS K 6768). This mixed solution is prepared by gradually mixing water, methanol, formamide, and ethylene glycol monoethyl ether. It can be used for wetting tension tests of polyethylene films, polypropylene films, and general plastic films and sheets. Since this test is easily affected by temperature and humidity, it is used under specified standard test room conditions (temperature 23°C, relative humidity 50%). For more details, please download the catalog or feel free to contact us.

• Chemicals

● Reagents for COD Measurement We offer reagents used for measuring Chemical Oxygen Demand (CODMn) by potassium permanganate (KMnO4) as specified by official methods. *Official methods: Industrial water testing methods (JIS K0101) / Factory wastewater testing methods (JIS K0102) / Mine water and wastewater testing methods (JIS M0202) / Sewage testing methods ● Reagents for BOD Measurement Our BOD seed is a blended inoculum that contains bacteria capable of isolating various organic substances, formulated to achieve BOD values equivalent to those obtained from inoculum prepared from sewage sludge. The bacteria included in the formulation are produced and blended under strict product and lot management after being individually cultured. For more details, please refer to the catalog below.

• Chemicals

This is a reverse column with excellent separation characteristics for the cleanup process of dioxins. By performing thermal treatment under a nitrogen gas flow, we are able to remove interfering substances for analysis, so there is no need for cleaning operations before use. We recommend using a dedicated reservoir for the reverse column, a separatory funnel, and a Teflon straight union together. For more details, please refer to the catalog below.

• Analytical Equipment and Devices

The standards for residual pesticides under the Food Sanitation Act, the establishment of a positive list system, the implementation of new drinking water quality standards, and the provisional guidance on pesticides related to golf courses are increasing the importance of measuring pesticides present in food and the environment. Our company offers a wide range of reagents for residual pesticide testing that are suitable for ultra-trace analysis. In addition to our conventional products guaranteed to be 300 times concentrated, we also have products with enhanced quality specifications guaranteed to be 5000 times concentrated. These are useful for high-sensitivity analysis, so please consider them.

• Environmental Test Equipment
• Chemicals

We sell "manufacturing-only pharmaceuticals" that can be used from product development to actual manufacturing. We supply products under strict quality control, including additional conformity testing for international standards. When purchasing this product (manufacturing-only pharmaceuticals), a license and a confirmation document are required in accordance with the Pharmaceutical and Medical Device Act. For more details, please refer to the catalog below.

• Chemicals

The quantitative test for protein-based pharmaceuticals (Lowry method) and the measurement of protein digestibility of digestive enzyme preparations use "Folin's reagent." This product is prepared in accordance with "Folin's reagent" listed in the Japanese Pharmacopoeia. In addition to the above, we also offer products related to protein research, such as reagents for protein electrophoresis and reagents for biomarker measurement. Please feel free to contact us.

• Chemicals

Parabens exhibit bacteriostatic effects against many microorganisms and are characterized by being white and odorless, which makes them widely used as stabilizers, preservatives, and additives. This product is a paraben that conforms to the standards specified in the Japanese Pharmacopoeia. Please consider using it for pharmaceutical testing.

• Chemicals

This is a mouse monoclonal antibody that can specifically detect the SARS-CoV-2 antigen. It was developed in collaboration with Professor Akihide Ryo of the Graduate School of Medicine at Yokohama City University. It has been validated for use in antigen detection methods such as sandwich ELISA and lateral flow immunoassays. Since it is purified and produced from the culture supernatant of hybridomas using serum-free media, it is a high-purity antibody with minimal lot-to-lot variation. 【Features】 ● High specificity and affinity It does not cross-react with SARS-CoV, MERS-CoV, or other common human coronaviruses that cause colds, showing high affinity exclusively for SARS-CoV-2. ● Usable for antigen detection methods It has been validated that sandwich ELISA and lateral flow immunoassays can be constructed by combining various antibodies. ● Epitopes of the antibodies have been identified * The epitopes of each antibody will be disclosed after the conclusion of a Material Transfer Agreement (MTA).

• Other physicochemical equipment

"Fatty Acid Standard" is one of the reagents for food analysis, specifically for the analysis of fatty acids. It has been reported that the intake of trans fatty acids increases the risk of heart disease. In the future, establishing methods for analyzing fatty acids contained in food will be essential, making fatty acid standards indispensable. Our company offers a variety of fatty acid standards, including trans fatty acids. [Products] ◇ Saturated fatty acids (fatty acids, methyl esters, ethyl esters) ◇ Unsaturated fatty acids (fatty acids, methyl esters, ethyl esters of monounsaturated fatty acids, polyunsaturated fatty acids) We also handle related reagents and products necessary for analysis. For more details, please download the catalog or feel free to contact us.

• Chemicals

"Sorbic Acid Analytical Reagent" is one of the reagents for food analysis, used for the analysis of alcoholic beverages as described in the analysis method prescribed by the National Tax Agency. The reagents used in this analysis method (those for which standards are specified by JIS) must be of JIS standard grade 1 or higher, unless otherwise specified. Please make use of this for the routine analysis of alcoholic beverage components. 【Analysis Targets】 Fruit wines, sweet fruit wines, etc. 【Products】 Dehydroacetic Acid Grade 1 Methanol, Acetonitrile, 5mmol/L Citric Acid Buffer (1:2:7) for food analysis Potassium Sorbate Special Grade 1mol/L Sodium Hydroxide Solution (1N) for volumetric analysis *Special Grade: Items not listed in JIS but conforming to our special grade standards. For more details, please download the catalog or feel free to contact us.

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"Acetaldehyde Analysis Reagent" is one of the reagents for food analysis, used for the analysis of alcoholic beverages as specified in the analysis method (directive) set by the National Tax Agency. The reagents used in this analysis method (those for which standards are defined by JIS) must be of JIS standard grade 1 or higher, unless otherwise specified. Please make use of this for the analysis of common alcoholic beverage components. 【Analysis Targets】 Continuous distillation shochu, single distillation shochu, raw material alcohol, spirits, etc. 【Products】 Nicotinamide adenine dinucleotide Potassium pyrophosphate, special grade *Special grade: Items not listed in JIS that conform to our special grade standards. For more details, please download the catalog or feel free to contact us.

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