APPENDIX I. CONCENTRATION EQUATION
For reference, the following is the formula for Concentration used by the PQ Software;
CONTAMINANT WEIGHT (mg) x 1000 micrograms
------------------------------------------------- = CONCENTRATION ( ------------- )
TOTAL SAMPLE VOLUME (m
3
) m
3
Where;
(CONTAMINANT WEIGHT) is the difference between initial filter weight and
final filter weight
(TOTAL SAMPLE VOLUME) is the Volume of air passed through the filter in
cubic meters
(CONCENTRATION) is the quantity of particulate matter in
micrograms per cubic meter
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