| http://www.w3.org/ns/prov#value | - paraformaldehyde -mdfenko- it is better to do it under the hood. -akhshik- The fumes can be toxic and it is a known carcinogen, but unless you are heating it it is not usually that volatile I think so I do not think using it on the bench is a problem, as long as you are wearing gloves to protect skin obviously.
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