Page 43 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.9.3 Quality requirements

Test method Requirement Remarks Frequency
4.2 material thickness min. thickness for: determination during design
chamber pot and rinse bucket: 0,75 mm
wash basins and sinks, humidifier and water tanks:
0,90 mm
bathtubs: 2,00 mm, shower basins: 1,50 mm
4.3 thickness enamel coating max. thickness 0.60 mm S4/AQL 6.5
min. thickness 0.20 mm
4.4 cold citric acid min. class A + when taking into production a sig.diff.
humidifiers and cisterns min. class A; enamel recipe, but at least 1 x a year
medical bathtubs class AA
cold sulphuric acid min. class A +, medical bathtubs class AA

2
4.5 boiling citric acid max. 5 g/m per 2.5 hours when taking into production a sig.diff.
enamel recipe, but at least 1 x a year
4.6 boiling water 10 g/m /24h (mean value) test duration 48 hours when taking into production a sig.diff.
2
enamel recipe, but at least 1 x a year
4.7 detergent solution wash-bowls, rinsing-tubs and bathtubs test duration 2,5 hours when taking into production a sig.diff.
max. 8 g/m per 2.5 hours recipe, but at least 1 x a year
2
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

4.10 adherence < 2 mm min. 3, on test sheets conform to EN ISO 28764 in production 1 x a day
for medical bathtubs min. 2
> 2 mm min. 2
4.19 colour difference even and smooth surface, evaluated equal to the Colour difference possibly measured with In production 100%
appearance of an approved enamelled sample a spectrometer and tolerances previously
agreed by interested partners
4.26 abrasion resistance max. 0.1 gram in accordance with ASTM C501 when taking into production a sig.diff.
sandpaper S33/1kg/1000 rotations enamel recipe (excluding colour oxides)
but at least 1 x a year
4.28 steel quality in accordance with norm EN 10209 is recommended: determination during design
DC04EK / DC05EK / DC06EK

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