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Outdoor 7 in 1: pool test kit for pool, spa and hot tub with direct sunlight and use stabilizer or cyanuric acid. Test for pH, alkalinity, free chlorine, total chlorine, total bromine, calcium hardness and cyanuric acid. SUPER EASY AND RELIABLE Instant and accurate pool chemical test kit, color corrected and area guided test result for pool chemicals. Just dip in and get started. WORKS FOR SPA & HOT TUB Water test strips for hot tubs that are temperature calibrated for warm water work perfectly at a temperature of 104°F / 40°C or warmer. Works perfectly as a spa test strip. Saltwater pool tests: uncompromising chemical test efficiency for saltwater pools, results for freshwater and saltwater pools. 125 POOL TEST STRIPS - Sufficient pool water testers that you can test daily all summer with just one pool water test kit. › See more product details