Page 45 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.10.3 Quality requirements

Test method Requirement Remarks Frequency
cast iron quality
4.3 thickness enamel coating minimum 0.60 mm S4/AQL 6.5
4.4 cold citric acid - citric acid class A +, for medical bathtubs and when taking into production a sig.diff.
shower basins class AA enamel recipe, but at least 1 x a year

cold sulphuric acid - sulphuric acid class A +, for medical bathtubs and
shower basins class AA
2
4.5 boiling citric acid resistance weight loss: max. 5 g/m per 2.5 hours enamel recipe, but at least 1 x a year
2
4.6 boiling water weight loss: max. 10 g/m per 24 hours test duration 48 hours when taking into production a sig.diff.
2
4.7 detergent solution weight loss: max. 8 g/m per 2.5 hours, test duration 2,5 hours when taking into production a sig.diff.

enamel recipe, but at least 1 x a year
4.9 impact resistance at 20 N no damage > 2 mm diameter when taking into production a sig.diff.

after 24 hours enamel recipe, but at least 1 x a year

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