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Halogenated Hydrocarbons Contamination:
Halogenated Hydrocarbons are
used as refrigerants and solvents. The combined amount of
-
Trichlorotrifluoroethane
F113
-
Dichlorodifluoromethane F13,
-
Chlorodifluoromethane F22
-
Trichlorofluoromethane
F11
should not
exceed 5ppm.
Any detectable Halogenated Hydrocarbons
above 1 ppm are "abnormal" & require further investigation.
Other halogenated refrigerants and solvents are
subject to 1/2 TLV or the odour threshold.
TLV = THRESHOLD LIMIT VALUE
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