I bought this thinking it was regular iron filings but they are 30 micron particles. After a few hours with this stuff I got a little nauseous after using it as it seemed to still be up in the air. I'm fine after leaving the room for a while, but my workspace needs ventilation. 30 microns is in the same range as asbestos, and the safety data sheet for iron oxide particles recommends wearing an EN 140 mask, which looks like it's only a few microns. Steps under the protective suit. I got what I wanted but there must be a remark about the toxicity of this product. Until I get this mask I will have to use another product.
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