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Ask the Expert Question-and-Answer Archive by Ron Joseph February, 2006 Accuracy of EPA Method 24 for Waterborne Paints Q. Do you have any information on the accuracy of Method 24 Testing for VOC content of waterborne paints? A. Method 24 is sufficiently accurate if you have a significant amount of cosolvent
(coalescing agent) in the paint. However, some of the newer formulations contain
very little cosolvent, and in these cases Method 24 results might not be sufficiently
accurate to stand up in court. This applies particularly to reporting the results
in VOC (lbs/gal, less water). For this reason some state agencies have told
me that they do not conduct Method 24 on waterbornes. What is your situation? Best wishes, Ron Joseph |