東亜ディーケーケー List of Products and Services

The "NPW-400 model" is an automatic measurement device that can automatically measure total nitrogen (TN), total phosphorus (TP), and COD concentrations in wastewater from factories and business establishments, in response to water quality total quantity regulations. It is based on the measurement methods for total nitrogen and total phosphorus outlined in the Ministry of the Environment's Notification No. 64 of 1974, which establishes wastewater standards based on the provisions of the wastewater standards set by the Minister of the Environment. Additionally, it adopts the "120°C potassium peroxydisulfate digestion method - ultraviolet spectrophotometry for total nitrogen measurement" and the "120°C potassium peroxydisulfate digestion method - molybdenum blue spectrophotometry for total phosphorus measurement." 【Features】 ■ Adopts the same 120°C heating digestion method for 30 minutes as the specified measurement method ■ Achieves good correlation with manual analysis values ■ Simultaneous measurement of TN, TP, and COD (UV) using a multi-wavelength detector ■ Compact design with a simple sample and reagent weighing unit ■ Realizes a simple configuration with integrated manifold piping *For more details, please refer to the PDF document or feel free to contact us.

The "CODR-400 model" is an automatic measuring device designed to measure COD in factory wastewater and lake water, in response to wastewater regulations such as total water quality regulations. It is designed based on JIS K 0806 "Chemical Oxygen Demand (COD) Automatic Measuring Instruments." By adopting dual platinum electrodes, maintenance of the internal liquid of the reference electrode is no longer necessary. 【Features】 ■ Easy operation through an interactive method using a color touch panel ■ Display of titration curves on the color touch panel is possible ■ Rich logging functions allow for recording and checking of past measurement values, titration data, calibration data, alarm data, and start/stop data ■ Standard equipped with a cleaning function using oxalic acid to clean the reaction tank and electrodes from manganese contamination *For more details, please refer to the PDF materials or feel free to contact us.

The organic pollution monitor "OPM-161L" is a measuring instrument developed based on our over 30 years of experience and achievements, utilizing the ultraviolet absorbance method. This device measures the degree of organic pollution in wastewater discharged from factories and business establishments based on ultraviolet absorbance. The obtained values are correlated with CODMn and are used for calculating pollution load related to total water quality regulations. 【Features】 ■ Compact and lightweight - In addition to the immersion type, a new drop-in type detector installation has been adopted. - Improved maintainability. - Can also accommodate sampling methods. ■ Adoption of LED light source - Reduces environmental impact by not using mercury. - Achieves reduced running costs by employing long-life LED light sources. *For more details, please refer to the PDF materials or feel free to contact us.

The "OPM-1610 model" is a measuring instrument developed based on our over 30 years of experience and achievements, utilizing ultraviolet absorption photometry. It achieves stable measurements through feedback control of light intensity and significantly reduces power consumption by adopting energy-saving lamps. Additionally, it can also be used as a sampling type by employing a receiving tank. 【Features】 ■ Realized miniaturization ■ Stable measurements achieved through feedback control of light intensity ■ Significant reduction in power consumption due to the adoption of energy-saving lamps ■ Resistant to corrosion, capable of measuring in harsh environments *For more details, please refer to the PDF document or feel free to contact us.

The "OPM-1630 model" is an automatic water quality measurement device that directly illuminates sample water falling from a nozzle with a diameter of 10mm and measures the absorbance of ultraviolet and visible light using a two-wavelength absorbance measurement method for falling water. It employs a light quantity feedback system that maintains a constant light level, ensuring stable measurements. Automatic cleaning is performed by periodically moving a wiper located on the inner surface of the nozzle up and down. Additionally, a shutter has been installed to prevent splashes of water droplets generated during cleaning or when introducing sample water from adhering to the optical components. 【Features】 - Measures the concentration of organic pollutants in water based on the absorbance of ultraviolet light (254nm). - The falling water method eliminates the need for a cell window, removing concerns about contamination. - Stable measurements with a new optical system. - Function to prevent water droplets from adhering to the optical components. *For more details, please refer to the PDF document or feel free to contact us.

The "COD-60A" is a compactly designed COD meter that integrates heating and titration processing into a single measurement unit. Thanks to its unique automatic control system, it automatically handles the entire sequence from oxidation to titration and result printing. Anyone can easily obtain stable measurement results. Simply take the required amount of sample and reagents and place them in the measurement container. Press the start button, and all remaining processes will be completed automatically. This reduces the workload and significantly improves operability. 【Features】 - Measurement completed with just one button! Outstanding operability - Minimizes errors by the operator - Environmentally friendly with waste liquid volume below 10mL - Adopts a well-established titration method - Multi-range compatible, allowing direct reading of COD values *For more details, please refer to the PDF document or feel free to contact us.

The "DR3900" is a spectrophotometer equipped with a variety of functions in a compact device. The main unit has programmed analysis methods for heavy metals, inorganic ions, and organic substances, allowing for measurements when combined with reagents provided by HACH. Additionally, users can input their own calibration curves beyond the built-in programs. Analysis methods can be set according to the samples. 【Features】 ■ Pre-installed analysis programs (many dedicated reagents available) ■ Capable of accommodating user-specific analyses ■ Wavelength scanning function included ■ Equipped with a color touch panel (7-inch TFT LCD screen) ■ Compatible with a variety of measurement cells *For more details, please refer to the PDF document or feel free to contact us. 【Measurement Items】 Total nitrogen / Total phosphorus / Nitrate / Ammonia / COD (Permanganate method) / Silica / Cadmium / Residual chlorine / Iron / Copper / Volatile acids / Hardness / Phosphate, and approximately 70 other items.

The "DR900" is a handheld spectrophotometer that combines an LED light source with a filter. You can register frequently used analysis programs as "favorites," which helps improve usability and prevent operational errors. Additionally, it is equipped with a backlight, enhancing the visibility of the display. The backlight can be set to stay on continuously or for a fixed period, and you can also choose to turn it on or off with the backlight key. 【Features】 ■ Supports 26 languages, including Japanese ■ Adopts a favorites menu ■ Features a display with a backlight ■ Comes with pre-installed analysis programs ■ Auto power-off function *For more details, please refer to the PDF document or feel free to contact us.

The "DR 6000" is a spectrophotometer equipped with a variety of functions. The main unit has programmed analysis methods for heavy metals, inorganic ions, and organic substances, allowing measurements in combination with reagents provided by HACH. Additionally, users can input their own calibration curves beyond the built-in programs. Analysis methods can be set according to the samples. 【Features】 ■ Calibration curve is pre-entered. No standard solution is required for calibration. ■ Automatically selects the measurement program and performs automatic measurements (when using TNT plus reagents). ■ Capable of various measurements such as wavelength scanning and time scanning. ■ Analysis programs are pre-installed (many dedicated reagents are also available). ■ Comes standard with a multi-cell adapter to accommodate various sample cells. *For more details, please refer to the PDF document or feel free to contact us. 【Measurement Items】 Total nitrogen / Total phosphorus / Nitrate / Ammonia / COD (permanganate method) / Silica / Cadmium / Residual chlorine / Iron / Copper / Volatile acids / Hardness / Phosphate, etc., approximately 70 items.