The Toilet Paper Flush Test checks whether the toilet can flush and clear typical waste material — like toilet paper — without clogging. This is one of the standard flushing performance tests done in the factory to make sure every piece meets the required quality level before dispatch.
A toilet that cannot clear waste in a single flush is a major performance failure. This test is designed to catch such problems at the production stage itself.
Before doing the test, the toilet paper balls need to be prepared in a specific way:
Take 6 sheets of toilet paper, each measuring 100 mm x 110 mm.
Knead each sheet into a ball shape with a diameter between 50 mm and 70 mm.
Immerse all 6 paper balls in water for 10 to 12 seconds. This softens them and simulates real usage conditions.
Place the 6 wet paper balls into the toilet pan.
Flush the toilet once as you normally would.
Observe whether all the paper balls are cleared from the trap area after the flush.
The toilet passes the test only if all 6 paper balls are completely cleared from the trap in a single flush. If even one ball remains behind, the product fails the test and should not be passed for dispatch. The flushing mechanism, trap design, or water pressure may need to be checked and corrected.
Poor flushing performance leads to customer complaints, product returns, and damage to the brand. By running this test at the factory level, the team can ensure that only reliable, fully functional products go out to the market.

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