How does MACS Lab handle composite dust (wipe) samples?
We are required to seperated each dust (wipe) sample compoiste into single samples and each single sample must be analyzed as a seperate single sample. The report must also have for each sub-sample in the composite the remarks “This sample was contaminated by other samples as it was sent in the same container with other samples” printed on the report. This is required by the AIHA. We are an accredited AIHA Lead laboratory and must follow their rules and regulations. Each wipe sample in a composite is analysed seperately and we charge for each wipe in a composite sample as a seperate single sample. The best advice here is don’t make composite samples. The problem is a technical one regarding different matrix materials being in each of the subset samples and how that different matrix never gets tested in the QC process. • Q: I just received my lead report. What does it mean? A: Consult with the Department of Health Services. However, the HUD Guidelines “action levels” for Paint are 0.5%
