Taylor K-1582 Quaternary Ammonium Compounds (QAC) and Polyquat TestThe Taylor K 1582 Quaternary Ammonium Compounds (QAC) and Polyquat Test is another easy to use kit from Taylor, giving you the ability to accurately measure a wide range of critical elements of water chemistry. This kit includes a 3 4 ounce bottle and 2 ounce bottles of each of these testing reagents. Simply fill the test tube with pool water and add the correct reagents according to the supplied directions, and you will have highly accurate results