Last Week's Question was on Respirable Particulates.

Q: All of the following are true of Respirable Particulates except:

(A) Generally 10 microns or less
(B) They can be biological
(C) They are not chemicals
(d) They can be non-biological
(e) Carry other contaminants

A: (C) They are not chemicals!
81.3% of you were correct.