06-21-2011, 02:50 PM
haikuman wrote:
[quote=DJM]
Have it tested with an O2 meter
Smart ass *(:>* :cartman:
Actually, that's not a bad idea. If you have an industrial hygienist onsite (very likely if you are dealing with compressed gases and other chemicals) ask to borrow their O2 meter. Otherwise take the suggestion of filling a test tube and taking it outside to try the match trick.