残留塩素測定器DPD法

Chlorine Comparator DPD Method Simplified Method Chlorine Comparator DPD Method Powder Reagent Management of Tap Water in Japan Sibata Product Item Normal During Period Emergencies Remarks (1) Daily measurements at the faucet end Chlorine Free residual 0.1 mg/L 0.2 mg/L (2) If there are multiple water supply systems, then measure at Comparator the end of each system. DPD Method chlorine min. min. (3) When the concentration of free residual chlorine is 0.1 mg/L or less, measure the combined residual chlorine, and confirm conformity with the standards. Above-mentioned (4) During emergencies: This refers to when a gastrointestinal + Combined 0.4 mg/L 1.5 mg/L infectious disease is spreading within the building, or when potassium iodide residual chlorine min. min. water is supplied after construction work or a large-scale water outage. Reference: Tokyo Metropolitan Government website Management of Swimming Pools in Japan Sibata Product Item Criteria Measurement MeasurementFrequency (for swimming) Frequency (for schools) Chlorine Comparator, DPD Method Free residual 0.4 mg/L min., Every day, at leastonce before noon and Every day before use and Simple Pack, Free Residual Chlorine chlorine 1.0 mg/L max. at least twice after noon every hour during use Simple Pack, Chlorine 0.1 mg/L min., Every day, at least Chlorine Dioxide dioxide 0.4 mg/L max. once before noon and ̶at least twice after noon Simple Pack, pH５ pH 5.8 to 8.6 Once per month Every day before use Reference: Japan's Ministry of Health, Labour and Welfare, Health Policy Bureau Notification No. 0528003: Swimming Pool Hygiene Standards (Revised Edition) School Environmental Hygiene Management Manual

Powder Reagent, DPD Method Powder Reagent, DPD Method Potassium Iodide, (for 100 tests) (for 500 tests) with Dispensing Spoon ● Chlorine Comparator DPD Method Item Name Item Code Chlorine Comparator, DPD Method 080540-520 Chlorine Comparator, DPD Method with reagent for 100 tests 080540-521 Powder Reagent, DPD Method (for 100 tests) 080540-501 Powder Reagent, DPD Method (for 500 tests) 080540-503 Chlorine Comparator DPD Method Potassium Iodide, with Dispensing Spoon 20g 080520-0058 Measurement Procedure ●Add the DPD powder ●Finding the Combined Residual Chlorine ●Pure 10 mL of sample 　reagent and mix. ●After measuring the free residual chlorine, 　add one spoonful (0.1 g to 0.5 g) of ●Fill two rectangular water into the remaining 　potassium iodide (separately available) rectangular test tube. 　using the dispensing spoon provided, test tubes with sample 　and ensure that it dissolves. water until they are １０㎖ 80 % full and place ●Leave the solution them into the left for approximately 2 minutes. and right test tube Then place it into the center hole of the chlorine comparator pockets. to allow comparison with the colors on the the standard color plate. Find the concentration of total 1０mL 1０mL residual chlorine from the applicable standard color. Standard color windows 1０mL Find the combined residual ●Place the sample solution in the center hole for chlorine concentration by color comparison measurement. using the calculation formula. ● Water Tester “Simple Pack®” Item Name Item Code Simple Pack, Free Residual Chlorine (48 included) 080520-306 (Total) Residual Chlorine (48 included) 080520-307 Hydrogen Ion Concentration, pH 5 (48 included) 080520-302 Chlorine Dioxide (48 included) 080520-325 Simple Pack, Free Residual Chlorine Measurement ❶ ❷ Press the pump with ❸ ❹ Procedure your fingers to drive any air out of the pack. Holding the nozzle, shake and Place the nozzle in the sample mix the sample liquid and the liquid. Slowly lessen the coloring agent inside the pump. While holding the nozzle with pressure of your fingers, Compare the color with the colors your fingers, twist the knob to allowing the sample liquid to in the standard color chart (colorimetry) to determine the break it off. enter into the pump. concentration. Specifications, and appearance described in this document are based on information as of April 10, 2015. They are subject to change without notice for improvement of the product. 1-1-62, Nakane Soka-City, Saitama, Japan TEL:+81-48-933-1582　FAX:+81-48-933-1591 E-mail:overseas@sibata.co.jp http://www.sibata.co.jp/english/ 201504K