ACGIH TLV = 10ppm. Is there a method to calculate the actual result based on usage, or is this a measurable by instrumentation?
Thanks for your help.

Go to www.niosh.gov. (http://www.niosh.gov.) You will find info there. Also if you go to www.osha.gov, (http://www.osha.gov,) and then look under regulations for the exposure information of specific hazardous materials you may find what you need. Or e-mail me I may be able to locate it for you.

Both of these site contain mathematical formulae for determining exposure limits.

All limits are based upon measurements and scientific analysis.