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  1. Home
  2. Testing, Analysis and Measurement
  3. 東亜ディーケーケー 本社、営業所(札幌・仙台・千葉・名古屋・大阪・広島・四国・北九州)、事業所(狭山、東大和)
Testing, Analysis and Measurement
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東亜ディーケーケー 本社、営業所(札幌・仙台・千葉・名古屋・大阪・広島・四国・北九州)、事業所(狭山、東大和)

EstablishmentSeptember 19, 1944
capital184248Ten thousand
number of employees569
addressTokyo/Shinjuku-ku/1-29-10 Takadanobaba
phone03-3202-0219
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last updated:Aug 01, 2025
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  • Products/Services(88)
  • catalog(85)
  • news(11)

東亜ディーケーケー Company Overview

A comprehensive measurement instrument manufacturer that provides various analytical devices.

Toa DKK was established in 2000 through the merger of Toa Electric Wave Industry Co., Ltd. (TOA) and DKK-TOA Co., Ltd. (DKK). Our products are active in the fields of environment (water, air, gas) and medical applications. Utilizing our unique core technology, the "electrochemical sensor," we provide products and services that meet our customers' needs. We will continue to strive to be a company that contributes to the preservation of the global environment and the realization of a healthy lifestyle.

Business Activities

Toa DKK is responding to a wide range of needs in fields such as environmental measurement, chemical analysis, production and quality control, process control, industrial gas detection alarms, and medical-related equipment, with measurement technologies centered on "water, air, gas, and medical." Utilizing the unique technologies cultivated over many years, we provide products and services from the customer's perspective. Measurement instrument business (environmental and process analysis instruments, scientific analysis instruments, etc.) pH meters, ORP meters, electrical conductivity meters, dissolved oxygen meters, total nitrogen/total phosphorus/COD meters, organic pollution monitors UV meters, ion analyzers, ion chromatographs, automatic titration devices, salinity analyzers, turbidity meters, residual chlorine meters, etc. Toa DKK is the exclusive distributor for HACH in Japan. HACH products include turbidity and SS meters, residual chlorine meters, phosphorus analysis devices, ammonia analysis devices, sludge interface meters, spectrophotometers, and portable pH/ORP/electrical conductivity/dissolved oxygen meters.

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Detects oil film on the water surface, enabling early detection of oil leakage! 'Oil Film Detector'

Detects oil film on the water surface, enabling early detection of oil leakage! 'Oil Film Detector'

It can be used even in areas with significant water surface fluctuations! It is also suitable for detecting leaks of water and oil on the floor.

The "ODL-1600A model" is an oil film detector (non-explosion-proof type) that automatically detects oil films on the water surface using laser light, utilizing the difference in reflectivity between water and oil in visible light, allowing for early detection of oil spills. It is suitable for use not only on the water surface but also as a detector for water and oil leaks on the floor. Through the optimization of the optical system, it can detect distances from 0.3m to 4m, and up to 6.5m on a still water surface, making it capable of functioning even in areas with significant water surface fluctuations. 【Features】 ■ Non-contact measurement using laser light ■ Suitable for use as a detector for water and oil leaks on the floor ■ Capable of functioning in areas with significant water surface fluctuations ■ Allows for the connection of two detectors to one converter for operation *For more details, please refer to the PDF document or feel free to contact us.

Products/Services (88)

[Video] Useful Video on Electrical Conductivity Measurement (Desktop Electrical Conductivity Meter) product image
[Video] Useful Video on Electrical Conductivity Measurement (Desktop Electrical Conductivity Meter)
[Video] Salt Content Analyzer Helpful Video (Micro Dispenser Change) product image
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[Video] Kemio Portable Heavy Metal Analyzer Helpful Video product image
[Video] Kemio Portable Heavy Metal Analyzer Helpful Video
[Video] IA-300 Helpful Video (For Reference on Ion Measurement Images) product image
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catalog(85)

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Portable heavy metal analyzer Kemio

Portable heavy metal analyzer Kemio

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Immersible detector for replaceable tip pH/ORP electrodes □HC-G7_G9

Immersible detector for replaceable tip pH/ORP electrodes □HC-G7_G9

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Process Automatic Measurement Device XAT-300 (Silica Measurement)

Process Automatic Measurement Device XAT-300 (Silica Measurement)

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NT3100sc Specification Sheet

NT3100sc Specification Sheet

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news(11)

2025-10_水道展出展のご案内.png

[Exhibition Information] We will be exhibiting at the Hiroshima Waterworks Exhibition 2025 [Held from October 29 (Wednesday) to 31 (Friday)!]

  • SEMINAR_EVENT

Toa DKK will exhibit at the "Hiroshima Waterworks Exhibition 2025" held from October 29 (Wednesday) to October 31 (Friday). Venue: Hiroshima Gate Park ◎ For simple measurements and continuous monitoring in environmental conservation sites ◎ ◎ For water quality analysis operations at water purification plants ◎ We will showcase our products centered around our company and HACH's water quality analyzers. Toa DKK Booth No. 126 <Main Exhibited Products> - Automatic water quality measurement device for tap water - Turbidity meter - Pocket residual chlorine meter - Desktop turbidity meter / Portable turbidity meter - Portable heavy metal analyzer Pre-registration can be done from the official website. https://suidoten.jp/2025/ >> We look forward to your visit! <<

Oct 29, 2025

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2025-10_水道展出展のご案内.png

[Exhibition Information] We will be exhibiting at the Hiroshima Waterworks Exhibition 2025 [Starting from October 29 (Wednesday)!]

  • SEMINAR_EVENT

Toa DKK will be exhibiting at numerous trade shows. This time, we would like to announce the "Hiroshima Waterworks Exhibition 2025," which will be held from October 29 (Wednesday) to October 31 (Friday). Venue: Hiroshima Gate Park ◎ For simple measurements and continuous monitoring in environmental conservation settings ◎ ◎ For water quality analysis work at water purification plants ◎ We will be showcasing our company and HACH's water quality analyzers. Toa DKK Booth No. 126 <Main Exhibited Products> - Automatic water quality measurement device for tap water - Turbidity meter - Pocket residual chlorine meter - Desktop turbidity meter / Portable turbidity meter - Portable heavy metal analyzer Pre-registration can be done through the official website. https://suidoten.jp/2025/ >> We look forward to your visit! <<

Oct 01, 2025

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【Exhibition Information】Exhibiting at JASIS 2025 | Proposing automation and labor-saving solutions for water quality analyzers! Live demonstration with a turntable will also be conducted 【Starting September 3!】

  • SEMINAR_EVENT

Toa DKK will exhibit at "JASIS 2025," which will be held at Makuhari Messe from September 3 (Wednesday) to September 5 (Friday), 2025. Our exhibition booth is located in Hall 7, No. 7B-501. At our booth, we plan to showcase a wide range of water quality analysis instruments utilizing our unique electrochemical sensor technology. A highlight will be the automatic measurement system for multiple samples, which connects a tabletop water quality meter and an automatic titrator with a turntable (TTT-710). We will introduce solutions that contribute to the automation and labor-saving of analytical tasks, featuring actual equipment. In addition, you can view a diverse product lineup including the X series (tabletop water quality meters), P40 series (portable water quality meters), ICA-7000 (ion chromatograph), IA-300 (ion analyzer), AUT-801 (automatic titrator), kemio (heavy metal analyzer), DR series (spectrophotometers), and turbidity meter series. During the exhibitor seminars, we will provide technical information on three themes: "Fundamentals of Water Quality Measurement," "Fundamentals of Automatic Titrators," and "Fundamentals of Ion Chromatography (IC)." We sincerely look forward to your visit.

Aug 03, 2025

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Detailed information

Company name 東亜ディーケーケー 本社、営業所(札幌・仙台・千葉・名古屋・大阪・広島・四国・北九州)、事業所(狭山、東大和)
number of employees569
Contact addresspostalcode 169-8648 Tokyo/ Shinjuku-ku/ 1-29-10 TakadanobabaView on map TEL:03-3202-0219 FAX:03-3202-5127
Industry Testing, Analysis and Measurement
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