Vitreous and porcelain enamels. Enamel coatings applied to steel for writing surfaces. Specification Ingestion-build-201039 1 per cent to 6

1 per cent to 6 per cent copper from 0

This European Standard specifies the minimum requirements for complete ready-to-wear spectacles

Adds a requirement to inform customers when safety-critical work has been done

which are assumed to act freely and independently under loading

5 mg/kg to 1

Vitreous and porcelain enamels. Enamel coatings applied to steel for writing surfaces. Specification Ingestion-build-201039 1 per cent to 61 Scope This International Standard specifies the requirements for the functional and aesthetic characteristics of vitreous and porcelain enamel coatings applied to plain steel, for use as writing surfaces (whiteboards and chalkboards).