EN15284 Resistance to Micorwave Heat Test
Test procedure:
1.The submitted sample was immersed in a staining solution (1% aqueous solution of methylene blue), washed clear and then visually checked for any damage.
2.Except those made of glass or glass-ceramic, the sample was immersed in water (20°C) for 1 hour and wiped dry.
3.Two beakers (with 125 ml of water each), were placed at the back corners of the microwave oven but not disturbed the turntable.
4.The sample was heated at the centre of the turntable of the microwave oven (1000 watts with setting of mid high power) for a duration of 1 minute 50 seconds (short period heating).
5.The highest temperature of the handle (if any) was immediately measured. For those without handle, the highest temperature at other position was measured and reported as a reference.
6.The sample was immediately reheated for another 12 minutes (long period heating) and the temperature was measured again.
7.Once it was cooled down, aqueous solution was applied to the sample surface again and observation was made again for any sign of damage.
EN12875-4 Dishwasher Safe Test
Test procedure:
1.The sample was washed in warm water containing a small amount of non-aggressive hand dishwashing detergent, then rinsed and dried before visual inspection for any damage.
2.The sample was immersed in 0.5% detergent solution (75+/-1°C) for 16 hours, rinsed in warm water and compared with the control sample in respect to its gloss and color using the rating scheme as stated in this report.
3.Step (2) was repeated for a further 16 hours in using a fresh detergent solution.
EN1183:1997 Thermal Shock Test
Test procedure :
1. Test method B as specified in the standard was adopted for the test.
2. The sample was initially heated in an oven set to 60°C for 30 minutes.
3. It was then transferred to cold water at 20°C and immersed for a period of approximately 1 minute.
4. The above steps were repeated except that the temperature of the oven was increased by :
- 10°C for temperature difference ≤ 100°C.
- 20°C for temperature difference > 100°C.
5. The test completed when failure occurred on all tested specimens.
6. The cumulative failure in % and the standard deviation was determined.。