It is common for an MSDS to list the chemical contents of a product without giving an overall VOC g/L number. If the number is listed as “< 100 g/L,” for example, which is common, you can list 100 g/L as the number in credit documentation. In other cases, you may have to contact the manufacturer to get the total VOC number. Suppliers can be your allies in tracking down this information when they know the sale of the product is at stake.