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Industrial Test Systems SenSafe 481126 Free Chlorine Test Strip, 40 Seconds Test Time, 0-6ppm Range (Pack of 30) auspowers_batchone Warm prompt: What you haveIndustrial Test Systems SenSafe 481126 Free Chlorine Test Strip, 40 Seconds Test Time, 0 6ppm Range (Pack of 30) Combining accuracy, affordability, and ease of use, our patented test strips have revolutionized water testing. They provide accurate, rapid results at an affordable cost. Designed using cutting edge chemistries and state of the art manufacturing processes, our test strips and test kits replace outdated testing kits that are labor and cost