SKC Limited AirChek 3000 Deluxe Pump Step By Step Guide - Manual (Page 8)

Page 6 224-G1 Issue D www.skcltd.com
The Dust Diagram
AIR SAMPLE
1. Amount collected
2. Flow of air through filter
3. Time run
Flow x Time = Volume through
filter in litres or cubic metres
Volume and Amount gives
CONCENTRATION in mg/m³
or
parts per million (ppm)
An air sample requires three basic
meaurements: amount of pollutant collected,
flow of air through the medium and the run
time in minutes.
All exposure limits are based on personal
exposure. At this time there are NO limits for
background or static samples, however, some
people do take static samples for their own
information to get an idea of general levels of
contamination. If it is considered that a person
creates their own airborne hazard as they
work and that their face is normally in close
proximity to that hazard, it is clear to see why
personal sampling is the accepted way of
measuring contaminants.
Personal Sampling
All exposure limits are based on a
personal sample
Sampler
Pump