![Hand of a service worker is holding water testing kit to check PH and chlorine concentration in swimming pool. Stock Photo | Adobe Stock Hand of a service worker is holding water testing kit to check PH and chlorine concentration in swimming pool. Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/04/29/99/41/1000_F_429994172_MLGF3e5jVscuDHPXa2KP2F0m5YRQHysU.jpg)
Hand of a service worker is holding water testing kit to check PH and chlorine concentration in swimming pool. Stock Photo | Adobe Stock
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Water Testing Meter Digital LCD Multi-function,PC-102B CL2 Chlorine & PH Tester Swimming Pool Spa Water Quality Analyzer with Probe Digital Test Meter for pH, Chlorine and Salt : Amazon.co.uk: Garden
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Water Testing Meter Digital LCD Multi-function,PC-102B CL2 Chlorine & PH Tester Swimming Pool Spa Water Quality Analyzer with Probe Digital Test Meter for pH, Chlorine and Salt : Amazon.co.uk: Garden
![Analysis of the PH and chlorine of the water in a swimming pool in Summer. Measurement of chlorine and PH of a pool BANNER. Cleaner Kit. Spain, 2019 Stock Photo - Alamy Analysis of the PH and chlorine of the water in a swimming pool in Summer. Measurement of chlorine and PH of a pool BANNER. Cleaner Kit. Spain, 2019 Stock Photo - Alamy](https://c8.alamy.com/comp/W20WJB/analysis-of-the-ph-and-chlorine-of-the-water-in-a-swimming-pool-in-summer-measurement-of-chlorine-and-ph-of-a-pool-banner-cleaner-kit-spain-2019-W20WJB.jpg)