Turpentine - VOC?

If a diluent is required for application of the product as specified on the label or other marketing literature, in the U.S. regulatory system it would count towards to VOC regulatory limit for the defined product category. I assume you are working on LEED 2009 credit criteria. The South Coast Air Quality Management District requires labeling the VOC content as supplied and as thinned on every Rule 1113 product sold in the District. The limit is based on the product as thinned. From my perspective, the diluent cannot be considered to be a separate material and it is not a coating or sealant. It is possible for a product that is not otherwise compliant to be sold legally in the Los Angeles basin due to regulatory exemptions. However, LEED credit is based on compliance with the limits. The 2004 version of Rule 1113 exempted all containers 1-quart or less in capacity and had an averaging program that allowed some otherwise non-compliant products to be sold. On January 1, 2004 there were a handful of Rule 1113 categories with limits above 600 g/L.