Page 45 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 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 + when taking into production a sig.diff.
- for medical bathtubs and shower basins class AA recipe, but at least 1 x a year
cold sulphuric acid - sulphuric acid class A +
- for medical bathtubs and shower basins class AA
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
2
4.6 boiling water weight loss: max. 10 g/m /24h (mean value) 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 after 24 hours when taking into production a sig.diff.
enamel recipe, but at least 1 x a year

4.19 colour difference even and smooth surface, evaluated equal to the Colour difference possibly measured with a In production 100%
appearance of an approved enamelled sample spectrometer and tolerances previously
agreed by interested partners

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