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5 in 1 Water quality testing strips for hot tubs, swimming pools or spas. Easy, accurate and quick detection of pH, Free Chlorine/Bromine, Total Alkalinity, Cyanuric Acid and Total Hardness. 100 count :
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Bestway 3-in-1 Pool and Spa (Lay z Spa) Test Strips (50 strips) for Chlorine, PH and Alkalinity testing #58142 : Amazon.co.uk: Garden
![Bestway 3-in-1 Pool and Spa (Lay z Spa) Test Strips (50 strips) for Chlorine, PH and Alkalinity testing #58142 : Amazon.co.uk: Garden Bestway 3-in-1 Pool and Spa (Lay z Spa) Test Strips (50 strips) for Chlorine, PH and Alkalinity testing #58142 : Amazon.co.uk: Garden](https://m.media-amazon.com/images/I/61+-0Ois99L.jpg)