The LaMotte 3156 is a Sodium Chloride (Salt) Test Kit. The (Salt) Sodium Chloride Test Kit is an easy-to-use drop count titration kit for salt water pools. The salt content of the pool is measured by counting each drop of titrant added to the sample tube. The kit comes in a sturdy, plastic case with two 30 mL salt titrant bottles, one 15 mL chloride reagent bottle, and one clear sample tube with cap.