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The FLUIDMASTER fluidmaster-3532 Leak Detector Tablets are a diagnostic consumable used to identify silent leaks in toilet tanks. Each tablet is colored so that dye disperses visibly into the tank water, making it easy to confirm whether the flapper or flush valve is allowing water to pass into the bowl without a flush cycle. The bag contains 100 tablets, providing enough supply for routine preventive checks across a full service route or property inspection. Plumbers, property managers, and water conservation technicians use these tablets as a fast, low-cost first step before committing to component replacement.
These tablets are designed for use in standard residential and light commercial toilet tanks. Drop one tablet into the tank, wait several minutes without flushing, and check the bowl for color. A color change in the bowl confirms a leak at the flush valve or flapper seat. The 100-count format makes this product practical for multi-unit inspections, plumbing service calls, or facility maintenance programs where multiple fixtures need to be checked in a single visit.
Designed for use with standard residential and light commercial toilet tanks as a diagnostic leak detection aid.
No tools or shutoff are required to use leak detector tablets. Remove the toilet tank lid and drop one tablet into the tank water without flushing. Wait at least 10 to 15 minutes, then inspect the bowl for dye color. If color appears in the bowl, the flush valve or flapper requires service or replacement. Dispose of unused tablets according to local regulations.
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