LaMotte DPD 1A Free Chlorine Reagent, 30 ml | P-6740-G

If you've ever tested your pool water, chances are LaMotte science was behind it. Founded in 1919 by chemist Frank LaMotte, the LaMotte Company has spent over a century making water analysis simple, accurate, and dependable. From its Chestertown, Maryland home — where it has manufactured since 1956 — LaMotte pioneered chlorine testing for pools and drinking water and introduced the industry's first "Dip & Read" pool and spa test strip in 1996.

Today, as part of the A.H. Thomas Company family, LaMotte produces professional-grade test kits, strips, reagents, and digital instruments like the WaterLink line, trusted by pool service pros and DIY homeowners alike. When your water chemistry is right, everything else gets easier — and LaMotte gives you the confidence that your readings are right the first time.