Solids analysis (percent nonvolatile material by weight or %NVM) in the coatings industry is determined for a variety of reasons. Suppliers to the industry frequently sell materials based on the solids content. Accurate solids determinations are critical to their bottom line and their customers’ satisfaction.
EPA regulations mandate that VOCs must be recorded and be at compliant levels. VOC measurement involves determining the solids content of the material, but the solids content is only part of the VOC determination procedure. The water content, determined by Karl-Fischer titration or gas chromatographic techniques, is also necessary to calculate VOC.