The easy life 6 in 1 water test strips quickly provide you with reliable information on most important water quality measurements in your aquarium simply dip the strip briefly into the water for about 30 60 seconds and then compare it with the colour scale on the packaging each bottle contains 50 test strips each for testing ph range 55 95 total alkalinity khtac total hardness ghth chlorine content tc nitrite no nitrate no step 1 remove 1 test strip from the tube close t