Kemesta

Toimialayhteisö: Kemesta
Komitea: CEN/TC 139 (Paints and varnishes)
Alkuperä: CEN
Määräpäivä: 2022-07-21
LaajennaSupista
 
This document describes the procedure for determining objectively the chalking resulting from natural or artificial weathering of an organic coating on a metallic substrate.The advantage of this procedure for measuring chalking of an organic coating is that the result can be read off immediately on an instrument. Subjective judgement by visual comparison of test specimens with reference specimens is not necessary.Reproducible results can only be obtained by careful execution of the test. Special attention is paid to the adhesive tape and its application to the test surface.The test method is not applicable to embossed coatings. In the case of textured coatings, the degree of texture will influence readings. Also, dirt collection can influence readings on outdoor weathered specimens.NOTE Different methods for assessing chalking are in use. The results of these different methods are not comparable.
Toimialayhteisö: Kemesta
Komitea: ISO/TC 61/SC 14 (Environmental aspects)
Alkuperä: ISO
Määräpäivä: 2022-07-22
LaajennaSupista
 
This document specifies test methods and evaluation criteria by addressing potential ecotoxicological adverse effects on marine organisms. Adverse effects on marine species may be caused by soluble degradation products of plastic materials such as intermediates or remaining residues resulting from the biodegradation of plastic materials that are used in products for marine applications (e.g. nets for fish farming, dolly ropes, floats, buoys, etc.) and which are intentionally disposed to coastal areas, e.g. eulittoral, sublittoral or pelagic zones. The ecotoxicity testing scheme covers marine organisms from four trophic levels, primary producer, primary and secondary consumer and decomposer: This document is not suitable for the assessment of adverse effects caused by solid, non-biodegradable plastic materials of any size.