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Interesting, I had some vermiculite removed recently and got a response from the ZAI trust that the samples had fibers but they couldn't say specifically that i
by SpicyUme 11mo ago
Interesting, I had some vermiculite removed recently and got a response from the ZAI trust that the samples had fibers but they couldn't say specifically that it was asbestos. I assumed that was a legal distinction, it didn't occur to me that it might be from different test methods.
- marak830 11mo agoYeah, for a PCM test we only count 100 fields, and identify the number of fiber end points (upto 2) which with math can give an approx number of fibers/cc2 - helps determine approx how much potential can be in the air (this is usually done during abatement - when it's being cleaned up). A PLM analyst will use multiple methods to determine if the sample has asbestos, and takes a much longer time. There are even more expensive tests that can be performed but I'm not so familiar with those.