THESE TEST STRIPS HAVE EXPIRED AND ARE FINAL SALE ONLY - DUE TO THEIR RECENT EXPIRATION, THEY SHOULD WORK WITHOUT ANY ISSUE
Great for Pools AND Spas! Test Free Chlorine, Alkalinity, pH, and Cyanuric Acid - All in One! The Insta-TEST 4 Plus pool strips measures free chlorine from 0-10 ppm, total alkalinity from 0-240 ppm, pH from 6.2-9.0, and cyanic acid from 0-800 ppm. This test strip is an easy to use, dip-n-read strip providing instant results! The Insta-TEST® 4 Plus strip is ideal for pool owners who need the most critical tests for perfect water balance.
Each bottle includes 50 test strips, packaged in a waterproof PopTop bottle with a hinged cap, which also has a molded desiccant liner to protect strips from moisture and UV light.
Used them countless times this year. Went to have the pool water tested yesterday and the professional results were exactly the same as these expired test strips.
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