PREVRA Three Sink Method: The Correct Wash, Rinse, and Sanitise Sequence
A step-by-step poster showing the proper three sink method for manual warewashing in UK commercial kitchens. Required knowledge under SFBB cleaning schedules.
Why the three sink method matters for food safety and EHO inspections
If your kitchen does not have a commercial dishwasher, you must use the three sink method for manual warewashing. EHO inspectors will check that your sinks are set up correctly, that water temperatures are maintained, and that staff follow the correct sequence: wash, rinse, sanitise. Getting the order wrong — or skipping a step — means your equipment is not properly cleaned and sanitised.
Counter-intuitively, the sanitising step is temperature-dependent in a way most staff get wrong. A chemical sanitiser at too low a temperature will not work effectively, while water that is too hot will cause the sanitiser to evaporate before it has sufficient contact time. The sweet spot for most quaternary ammonium sanitisers is between 24°C and 38°C — not scalding hot as many assume.
Using this poster at your pot wash station
Display this poster directly above your three sink setup so the sequence is visible at all times. Train every kitchen porter and chef on the correct method during induction. Sink 1 (wash) should be filled with hot water at 43-49°C and detergent. Sink 2 (rinse) uses clean hot water to remove detergent residue. Sink 3 (sanitise) uses a food-safe sanitiser at the concentration and contact time specified on the product label.
Digital SFBB includes cleaning schedule templates that cover your pot wash area. Staff sign off each sink set-up and water change, and managers can verify compliance from their phone rather than walking the kitchen line.
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