Hygiena PRO-Clean Rapid Protein Residue Test (100pk) SX12 Rotary Tile Tool Parts A failed bottom check valve

A failed bottom check valve gives you a pump that feels like it is working but never builds pressure

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Hygiena PRO-Clean Rapid Protein Residue Test (100pk) SX12 Rotary Tile Tool Parts A failed bottom check valveOverview Hygiena PRO Clean is a rapid protein residue test. Swab the surface, release the reagent, and read the colour no meter and no interpretation required. Supplied as a 100 pack. A 2,000 pack is also available. How to read it If protein residue is present, the reagent turns purple. The more contamination there is, the faster the colour develops and the darker it becomes. Results in 10 minutes. Why protein is the residue worth testing for Protein