Series 6 3-in-1 Pool Test Kit

A: Dip the plastic tester into your pool, making sure you draw water from a depth of at least 18 inches for an accurate "catch." Fill the small vial to the "fill" line with a sample of the pool water. Add five drops of ortho-Tolidin solution, a chlorine indicator. Place caps on vials and slowly invert or turn upside-down several times. Wait a few seconds to compare the color in the vial with the color standards indicated on the plastic tester to determine the free chlorine level. After that, wait a couple minutes and compare again to determine the chlorine residual level. Fill the large tube to the top solid line with pool water from a depth of 18 inches. Add five drops of Solution 2, a phenol red indicator, and mix by gently swirling. Compare the color with the pH color standards on the plastic tester. Warning: don’t perform this test if the chlorine residual is above 3.0. Using a sample from the pH test, add the acid demand titrant. Count each drop -- making sure to swirl between drops – until the color matches that of the 7.4 indicator. Refer to the acid dosage chart for the correct amount of acid to add to your pool. Warning: don’t perform this test if the pH is above 7.5 and the chlorine residual is above 3.0. After testing, rinse your plastic tester in a sink (never in the pool), dry, pack up the kit and put it in a cool, dry place, up high away from little hands. Some experts suggest using your test kit weekly during the swimming season. Hope this helps.