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Nu-Calgon 4185-40 is a condensate drain pan treatment supplied as solid gel-locking tablets in a contractor pack of 40. Designed for 5-ton HVAC systems, each tablet activates with condensation, turns to gel, locks into place to avoid drain blockage, and dissolves evenly over approximately three months. The formulation has an approximate pH of 8.3 and contains benzyl-C12-18-alkyldimethyl ammonium chlorides (10–30%) and urea (30–60%).
Contractor pack of 40 solid gel tablets for 5-ton HVAC condensate pans; gel-locking technology, ~3 months dissolution, pH 8.3
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