I read the string of comments on acetone being used as a floor stripper in polished concrete applications. We have a contractor proposing to use Acetone Based Dye stain for an interior concrete floor. The dye is 0 VOC. We have run across the same arguments from the supplier, that acetone is a VOC exempt solvent. Is this true with LEED? It just doesn't feel right. Can you provide any clarifications about the acceptability of acetone as the carrier for a concrete stain product?