VOC testing method

I have yet to have a sealant refused due to the testing method, many MSDS do not state the testing method. I believe this is more of a concern for credit 4.3 and CI credit 4.5 furnishings.

You must report VOC in grams per liter (g/L) on the LEED-Online forms LEED does not reference ASTM testing methods to measure VOCs. The “WPSTM” test numbers cited by the manufacturer of GE Silicones appear to be internal designations used only by that company. Since they report VOC in g/L “EXCL. H2O & EXEMPTS”, they are probably using the correct standard. South Coast Air Quality Management District (SCAQMD) Rules 1168 & 1113 describe the appropriate procedures for calculating VOC content for adhesives & sealants under IEQc4.1 and for architectural coatings under IEQc4.2. Also under IEQc4.2, Green Seal Standards cite US EPA Reference Test Method 24 for paints. These are all essentially the same procedures. When manufactures follow these procedures, VOC content is ALWAYS expressed either in grams per liter (g/L) or in pounds per gallon (lbs/gal). Cut sheets often refer to this as “Theoretical” or “Regulatory” VOC Content, and they often include the note, “less water and exempt compounds.” If you find these words or references to SCAQMD, EPA, or “Method 24”, the manufacturer has probably used the correct method. Also under IEQc4.1 , Green Seal Standard GS-36 sets VOC limits for aerosol adhesives as a percentage by weight. Therefore, except for aerosol adhesive, if you find VOC’s reported in units other than g/L (or lbs/gal), the wrong VOC calculation method has been used. Just note that, under IEQc4.1 & IEQc4.2, LEED for Schools prescribes additional emissions limits (measured in micrograms per cubic meter) based on California Department of Health Services Standards.