Insta Test 4-in-1 Spa Test Strips
Simple to use. Easy to read. Measures free chlorine from 0 to 10 ppm, bromine from 0 to 20 ppm, alkalinity from 0 to 180 ppm, pH from 6.8 to 8.4 and total hardness from 50 to 800 ppm with instant results. Take a bottle with you on your vacation to test any pool or hot tub you’re tempted to use. Stay out of spas that do not show the correct levels of sanitizer and pH. 50 strips per bottle.
Made in USA.