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Dimensions: 12
the air will migrate to the middle of the test pack turning the centre of the sheet as indicated by a bluish colour rather than a uniform black
ISO: 11140-4:2007
sufficient to cause a two-degree temperature drop in a Bowie-Dick towel pack
Improved ink chemistry aids interpretation Blue colour remains is air leak is present
Pool Check 3 in 1 Pool & Spa Water Test Strips Options:Pool Check 3in1 - Bottle of 50 test strips Dimensions: 12Overview Pool Check 3in1 offers the user more than just another test strip; it offers accurate results that you can rely on. Pool Check 3in1 has been specially designed to work in both pools & spas, both chlorine systems & bromine systems. Economically priced, Pool Check 3in1 is the ideal choice for the average pool or spa owner. Parameters & Detection Ranges Free Chlorine: 0, 0. 5, 1, 3, 5, 10, 20 ppm Bromine: 0, 1, 2, 6, 10, 20, 40 ppm Total
