• A plastic item is considered single-use unless
  it passes testing according to standard BS
  EN 12875-1:2005 Mechanical dishwashing
  resistance of utensils Reference test method
  for domestic articles. Until 30 April 2024,
  items must be tested:

for a minimum of 125 washes

under the conditions specified in the
standard

by a lab that complies with standard
IS0/IEC 17025:2017

• The test consists of several cycles, and each washing cycle includes the following steps:

  Pre-wash: Fill the dry dishwasher with water; wash for 5 min ± 0.5 min; then drain the water from the dishwasher.

  Detergent wash: Fill the dishwasher with water; add detergent, 24 g ± 3 g of detergent per 6.0 L ± 0.5 L of water; heat the temperature to 60 °C ± 2 °C when the test for this step reaches 20 min ± 1 min; stop heating and continue washing for another 10 min ± 1 min; then drain the water from the dishwasher.

  Intermediate rinse: Fill the dishwasher with water; wash for 3 min ± 0.5 min; then drain the water from the dishwasher.

  Rinse aid rinse: Fill the dishwasher with water; start the washing test and heat to 65 °C ± 2 °C; add rinse aid when the temperature reaches 40 °C to 45 °C, 2.5 g to 3.0 g of rinse aid per 6.0 L ± 0.5 L of water; drain the water from the dishwasher when the temperature reaches 65 °C ± 2 °C.

  Drying: Close the dishwasher door for 10 min ± 1 min, then open the door for 30 min ± 1 min.

• Check the relevant parameters after every 50 test cycles. The parameters to be checked are as follows:
  - Whether the heating temperature can be controlled at 60 °C±2°C and 65°C±2°C;
  - The softening function of the water softener (cation exchanger);
  - The automatic addition function of detergent and rinse aid, ensuring the accurate weight of reagents is added;
  - If there are deposits on the test samples or the inner surface of the test dishwasher, remove the samples from the dishwasher,
  - and clean the dishwasher with 10% citric acid instead of detergent. Soak the removed samples in approximately 50°C 10% citric acid solution for 10 minutes.
  - Then place them back into the dishwasher after deposit cleaning and continue the test.