Determination of the VOC content according to ASTM

ASTM D 3960-1 is the method used in the US to determine the VOC content of coating materials. The VOC value is calculated as follows  

For varnishes exclusively containing solvents, this formula results in high values. This calculation is, however, of dubious value for water-containing varnishes. The unit g/1 does 

This is demonstrated in Example 1, which will then also be calculated according to other methods. 

Water spray varnish 30% solid matter content (binding agent and pigments) 

10% solvent content 60% water content varnish density 1.0 g/cm  

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The draft of the Varnishing Plant Regulation follows the US method according to ASTM D 3960-121 in determining the VOC content. 

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