HTH Test Kit 4 in 1

Accurate. Easy to use. Simply use the HTH® 4-in-1 test kit to measure: pH, Free Available Chlorine (FAC), Total Alkalinity (TA), and Acid demand. Store in original packaging, in cool dry conditions, out of direct sunlight, away from flammable liquids and out of the reach of children. Do not inhale, wear protective clothing when using the product. Always read the instruction for correct pool dosage.