Thermal Shock Resistance test
UNI EN 14688 – UNI EN 13310
This test simulates the thermal stress that bathroom basins and kitchen sinks are subjected to during everyday use. Their reliability over time is checked by this particularly strict test. Products must be subjected to the continuous, prolonged action (about 3 consecutive days, without interruption) of a jet of very hot water (70°C for bathroom basins and 90°C for kitchen sinks) immediately followed by a jet of cold water (15°C). The test involves a sudden temperature change cycle comprising a flow of hot water for 1 minute and 30 seconds. After a pause of 30 seconds, this is followed by a flow of cold water for 1 minute and 30 seconds. This is repeated for 1,000 cycles (with an interval between them of only 30 seconds). The test is only passed if the continuous expansion and contractions in size due to heavy temperature changes do not cause any type of permanent cracks, fissures or defects.