SPECIAL PRECAUTIONS: Carbon tetrachloride is a suspected human carcinogen. Handle in a fume
hood.
SAMPLING:
 1. Calibrate each personal sampling pump with a representative sampler in line.
 2. Sample at an accurately known flow rate in the range 1 to 3 L/m in for a total sample size of 20 to 500 L.
NOTE: High concentrations of oil mist may plug membrane filters creating unacceptably high pressure drops. If this occurs, terminate sampling.
 3. Collect 5 to 10 mL of unused, undiluted mineral oil in a vial. Subm it with samples for standard preparation.