AquaChek TM Red Test for Bromine, Total Alkalinity and pH all on one strip. 10 Strips Per. Test strips were developed in the medical diagnostic industry in the 1960's. Since that time, they have replaced liquid reagent tests for urine and blood testing. AquaChek uses that same technology for its pool and spa test strips.
Test strips are at minimum comparable in accuracy to liquid color comparator tests.
Because test strips require less user technique, we believe they actually deliver greater accuracy. Our test strips are manufactured and released against standard reference procedures from the 17th Edition of Standard Methods For the Examination of Water and Waste Water. These can give a false positive reading for free chlorine with the DPD chemistry. Recognized technical studies are available to support these claims. Test strips average 24 months dating from the time of manufacture, with the exception of AquaChek Silver and AquaChek Green for Cyanuric Acid.