Chlorine Calibration Reagents - Set of 25 Uses

This reagents check set provides a simple solution to validate the Chlorine Checker in the range of 0.00 to 2.50 ppm free chlorine. The set comes marked with the lot number and expiration date on each packet for easy traceability. This free chlorine checker reagent set are high-quality and pre-made for simple usage and prepared with high purity chemicals. They are designed to be used with the DPD Method to check for a pink tint in the sample between the chlorine and reagent.