Pocket Residual Chlorine Meter 'DR300'
All operations can be done with three keys! Depending on the reagent selected, both free chlorine and total chlorine can be measured.
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.
basic information
【Specifications (Excerpt)】 ■Measurement section: Compatible with a cell outer diameter of 1 inch ■Data memory: Latest 50 measurement values ■Operating environment: 0 to 50°C, relative humidity 0 to 90% (no condensation) ■Storage temperature: -20 to 55°C, relative humidity 0 to 80% (no condensation) ■Dimensions: Approximately 69(W) × 157(D) × 34(H) mm ■Weight: Approximately 250g (excluding dry batteries) *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applications】 ■Water purification plants ■Food industry ■Aquaculture and aquariums *For more details, please refer to the PDF document or feel free to contact us.
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[Exhibition Information] We will be exhibiting at the Hiroshima Waterworks Exhibition 2025 [Starting from October 29 (Wednesday)!]
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! <<
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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!】
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.
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Opening of the Toa D.K.K. official YouTube channel!
We have launched the official YouTube channel of Toa DKK! We are currently featuring product introduction videos and helpful videos about measurement operations. We plan to add various content in the future. Please take a look and consider subscribing to our channel!
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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.