LaMotte DPD #1B - 2 Oz (60 mL) Bottle - P-6741-H weight-capacity_350 lbs This ceramic pool depth marker

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LaMotte DPD #1B - 2 Oz (60 mL) Bottle - P-6741-H weight-capacity_350 lbs This ceramic pool depth markerThis is a 2 ounce bottle of LaMotte DPD #1B reagent. This replacement reagent is used for Free Chlorine testing with LaMotte Kits. DPD 1A and DPD 1B are added to a 5 or 10 mL sample to test Free Available Chlorine.