Measures for Free Chlorine and Bromine Alkalinity pH and Total Harness 50 StripsThe Insta-Test 4 pool & spa strip measures Free Chlorine 0-10 ppm (or Bromine 0-20 ppm) / pH 6.2-8.4 / Total Alkalinity 0-240 and Total Hardness 50-800 ppm. This test strip is a 1-Dip method designed to match the way strip users actually test water. Just dip and read to get truly instant results---only by Insta-TEST! No swirling or waiting times--the new Insta-TEST 1-Dip formula feature extremely stable color reactions without cross-contaminated pads.
S**E
Trustworthy product.
As title says - trusty and accurate
K**E
Best on the market
Best for accuracy and with all elements that are needed to check pool water
G**G
Best test strips around
Best test strips I’ve tried. Brilliantly precise for keeping hot tub levels correct. Much better than others I have tried
I**S
Excellent
Does what it says on the pot.
Trustpilot
1 month ago
1 month ago