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

This is a multi-type portable water quality meter that allows for the measurement of "pH," "ORP," "electrical conductivity," and "dissolved oxygen" through probe replacement. Available in a 2-channel type MM-42DP and a 1-channel type MM-41DP! The measurement of dissolved oxygen adopts an "optical method"! With a waterproof structure and backlight, it can be safely used in the field. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look. Additionally, you can download materials that clearly explain the measurement methods for pH, electrical conductivity, and dissolved oxygen.

This is a popular portable water quality meter that allows for the measurement of "pH," "ORP," and "various ions" through electrode replacement. Its slim design makes it easy to hold, and the energy-efficient and waterproof design ensures safe use in the field. ◎ You can view detailed specifications and more from the "PDF Download." If you are interested, please download the catalog to take a look.

The "WQC-40" is a portable water quality meter that supports various measurements including pH, electrical conductivity, salinity, TDS (total dissolved solids), seawater specific gravity, turbidity, temperature, dissolved oxygen, ORP (oxidation-reduction potential), ions, and water depth. The sensor module in the measurement section can simultaneously measure up to 9 items with a single unit and is capable of measuring water depths up to 100 meters, making it useful for environmental monitoring of rivers, lakes, and dams, as well as for water quality management in factories and aquaculture sites. It has a diameter of 45mm, allowing for easy insertion into drilling investigation pipes and other equipment. By connecting the optional Modbus power box to a general-purpose gateway, a water quality monitoring system can also be established. 【Measurement Items】 Standard: pH, electrical conductivity, salinity, TDS (total dissolved solids), seawater specific gravity, turbidity, temperature Optional: dissolved oxygen, ORP (oxidation-reduction potential), water depth, ions *Ion electrodes can be selected from 6 types (fluoride, chloride, nitrate, calcium, potassium, ammonium ions) *For detailed information such as measurement ranges, please refer to the documentation. Feel free to contact us with any inquiries.

The "WQC-30" is a high-performance integrated sensor that can simultaneously measure up to 6 parameters, making it a simple portable multiparameter water quality meter. It features a memory function for 200 data points. Automatic memory at regular intervals is also possible, making it effective for simple monitoring. Additionally, with its energy-saving design, it can measure continuously for approximately 70 hours using two AA alkaline batteries. This achieves about a 90% reduction in power consumption compared to our conventional products. 【Features】 ■ High-performance integrated sensor for simultaneous measurement of up to 6 parameters ■ Improved reliability in low-concentration turbidity range ■ Memory function for 200 data points ■ Energy-saving design ■ Continuous measurement for approximately 70 hours using two AA alkaline batteries *For more details, please refer to the PDF document or feel free to contact us.

The TB-31 is a portable turbidity meter that enables easy turbidity measurement in the field using an immersion-type sensor. It is ideal for measuring turbidity in general environmental water such as rivers and lakes, as well as in factory and construction wastewater. The repeatability in the low measurement range has significantly improved reliability to ±0.5 NTU compared to our conventional products.

The "CGP-31" is a portable carbon dioxide concentration meter that employs a membrane-type carbon dioxide electrode based on electrochemical operating principles. Using the membrane glass electrode method, it is unaffected by the presence of other gases, except for volatile weak acids, acidic gases, and basic gases. Additionally, it is minimally affected by humidity, eliminating the need for dehumidification treatment. We also provide dedicated data collection software for importing measurement data into a computer in text format. 【Features】 ■ Adopts a membrane-type carbon dioxide electrode based on electrochemical operating principles, achieving high-precision CO₂ measurement. ■ Reduces preparation effort as dehumidification treatment is unnecessary. ■ Equipped with a concentration conversion function, making it easy to check and manage measurement values. ■ Allows switching settings between gas phase concentration (% (v/v)) and liquid phase concentration (mg/L), accommodating a wide range of measurements. ■ Features a memory function capable of storing up to 1000 measurement data points. *For more details, please refer to the PDF document or feel free to contact us.

The "DO-32A" is a low-concentration portable dissolved oxygen meter that responds quickly and measures with high precision in the μg/L (ppb) range, also supporting simple continuous measurements. It accurately measures trace amounts of dissolved oxygen in water supply systems at thermal and nuclear power plants, metal material corrosion testing plants, semiconductor manufacturing equipment, etc., with high response and precision. The operability and functionality have been significantly improved based on the conventional DO-30A, reflecting the opinions and requests of related customers throughout. 【Features】 ■ Wide dynamic range / auto range ■ Fast response with long lifespan ■ Easy calibration ■ Temperature measurement function ■ Compact design for easy maintenance *For more details, please refer to the PDF materials or feel free to contact us.

This is a portable meter compatible with field measurements that can measure "dissolved oxygen," "pH," "ORP," "electrical conductivity," and "ions" through probe replacement. It features intuitive operation with an illustrated step-by-step guide and supports Japanese display. Additionally, it has smooth and convenient data management and output functions, allowing all data logs to be output to a PC or USB memory via USB connection. The dissolved oxygen measurement adopts a fluorescent method (LDO), making maintenance easy. 【Features】 ■ Supports water quality measurement in combination with digital sensor IntelliCAL probes ■ The multi-meter "HQ4000" series is equipped with a color display ■ Powered by a rechargeable lithium-ion battery, with charging possible via a dedicated AC adapter or USB connection ■ Equipped with data sorting and filtering functions *For more details, please refer to the PDF document or feel free to contact us.

The "2100Q" is a portable turbidity meter that can be easily and quickly measured in the field. Simply pour the sample into the measuring container and set it on the instrument to display the results digitally. Routine checks can be easily performed with the included standard solution set. Weighing only 530g (excluding batteries), it is compact and lightweight. It comes with a carrying case that stores the main unit, necessary instruments, and the instruction manual. 【Features】 - Simply pour the sample into the measuring container and set it on the instrument to display the results digitally. - Routine checks can be easily performed with the included standard solution set. - Weighs only 530g (excluding batteries), compact and lightweight. - Comes with a carrying case that stores the main unit, necessary instruments, and the instruction manual. - Battery-operated (can also use AA rechargeable nickel-metal hydride batteries). *For more details, please refer to the PDF document or feel free to contact us.

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 "DR300" is a pocket residual chlorine meter that can measure both free chlorine and total chlorine depending on the choice of reagents. It is palm-sized and weighs 250g (excluding batteries). With four AA alkaline batteries, it can perform approximately 5000 measurements with low power consumption. By switching ranges, it can measure from 0.02 to 2.00 mg/L and from 0.1 to 8.0 mg/L. 【Features】 ■ Easy operation ■ Dedicated reagents provided ■ Compact and lightweight ■ Energy-efficient ■ Dual range support ■ The carrying case can store the main unit, sample cells, and more. *For more details, please refer to the PDF document or feel free to contact us.