made to identify the solid if present in significant quantity. Once
identified a determination as to whether or not a toxicity hazard
exists should be made.
If no oil mist is present, 1 mg/m3 is the maximum level. When samp-
ling air, the total of oil mist and particulate together should be less
than 5 mg/m3.
The size of the particle matter should be compatible with engineering
specifications for proper equipment operability and maintainability.
39-296
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