nkSRPS H.C8.994:2026

Standard Test Method for Determination of the Weight Percent Individual Volatile Organic Compounds in Air-Dry Low VOC Coatings by Gas Chromatography

Scope

This test method is for the determination of the weight percent of individual volatile organic compounds in low VOC air-dry coatings.
This test method may be used for the analysis of coatings containing silanes, siloxanes, and silane-siloxane blends.
This test method is not suitable for the analysis of coatings that cure by chemical reaction (this includes two-component coatings and coatings which cure when heated) because the dilution herein required will impede the chemical reaction required for these types of coatings.
Precision statistics for this test method have been determined for waterborne coatings in which the volatile organic compound weight percent is below 5 percent. The method has been used successfully with higher organic content waterborne coatings and with solventborne coatings. This method may also be used to measure the exempt volatile organic compound content (for example, acetone, methyl acetate, t-butyl acetate and p-chlorobezotrifluoride) of waterborne and solvent-borne coatings. The methodology is virtually identical to that used in Test Method D6133 which, as written, is specific for only exempt volatile compounds. Volatile compounds that are present at the 0.005 weight percent level (50 ppm) or greater can be determined. Volatile organic compound content of a coating can be calculated using data from Test Method D6886 but requires other data (see Appendix X2.).