Section ATCP 76.17 - Water test kits(1) APPROVED. A test kit of a type approved by the department shall be maintained for testing the pool water pH; the disinfectant or sanitizer residual; the combined chlorine level, when chlorine is used; the total alkalinity; and the cyanuric acid concentration. The test kits shall meet the following specifications, as described in s. ATCP 76.17 Table A. Pf s. ATCP 76.17 Table A Required Test Kit Accuracy and Increment -
Minimum Accuracy Pf | Maximum Increment Pf |
Chlorine and combined chlorine | +/- 0.2 ppm | 0.2 ppm |
pH | +/- 0.2 pH unit* | 0.2 units |
Alkalinity | +/- 25 percent | 10 ppm |
Cyanuric | +/- 20 percent | 20 ppm |
Bromine | +/- 10 percent | 0.5 ppm |
Note: *Operators who do not want to use a pH meter and are using a test kit with a pH accuracy of +/- 0.2 pH units must be able to maintain the pH within a range of 7.4 to 7.6. Due to a common degree of error in many available test kits for pH, it is strongly encouraged to use a pH meter, with an accuracy greater than 0.1 or better, to determine the PH reading on the higher and lower end. If the Taylor test kit is used and natural light is not available, the Taylor light box should be used as instructed in the manufacturer's directions.
(2) TEST REAGENTS USE AND STORAGE. Test kit reagents shall meet all of the following: (a)Stored. Stored in the original container or per manufacturer directions. Pf(b)Replaced. Replaced as recommended by the manufacturer. Pf(c)Temperature range. Stored within the temperature range specified by the manufacturer for storage. Pf(d)Use. Used and properly disposed of before the expiration date. Pf(3) TESTING REAGENT TECHNOLOGIES. The disinfectant or sanitizer testing reagent shall use one of the following technologies:(a)Method. Diethyl-p-phenylene diamine or DPD in powder or liquid form. A test kit using the titrimetric method, ferrous ammonium sulfate and diethyl-p-phenylene diamine or FAS-DPD for chlorine and bromine testing and colorimetric comparators used for additional water testing shall be approved by the department and shall provide for accurate comparison in the required range for each test pursuant to s. ATCP 76.14 Table A. Pf(b)Alternatives. Other photometric, electronic, or other technology that achieves the accuracy as described in s. ATCP 76.17 Table A, and measures analytes within the range pursuant to s. ATCP 76.14 Table A. PfWis. Admin. Code Department of Agriculture, Trade and Consumer Protection ATCP 76.17
Renumbered from DHS 172.17 Register June 2016 No. 726; correction in (3) made under s. 13.92(4) (b) 7, Stats., Register June 2016 No. 726, eff. 7/1/2016Adopted by, CR 22-021: cr. Register June 2023 No. 810, eff. 9/24/2023This section is created eff. 9-24-23 by CR 22-021.