EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine Toulite The emissivity of a material

The emissivity of a material is its efficiency in emitting thermal energy (most organic materials and painted or oxidized surfaces have an emissivity of 0

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EASYTEST 7-Way Pool Test Strips, 150 Strips Water Chemical Testing for Hot tub and Spa, Accurate Test Bromine, Total Alkalinity, pH, Free Chlorine, Total Hardness, Cyanuric Acid, and Total Chlorine Toulite The emissivity of a materialBrand: EASYTEST Color: ^ 7 in 1 Pool Test Strips ^ Features: AFFORDABLE 150 STRIPS: This water chemical testing kit contains 150 test strips. Enough balanced for your swimming pool, hot tub, spa and other water testing. At least testing twice a week is recommended to keep your pool sparkling clean and safe. ACCURATE AND FAST TESTING: Just soak in water for 1 seconds; Then take it out,no need to shake excess water off and hold the test strip