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(a) Parts of vapor or gas per million parts of contaminated air by volume at 25 °C and 760 torr. (b) Milligrams of substance per cubic meter of air. When entry is in this column only, the value is exact; when listed with a ppm entry, it is approximate. (c) The CAS number is for information only. Enforcement is based on the substance name.

29 CFR 1926.1148 - Formaldehyde.

(e) Other cassettes, such as the Bell-mouth, may be used within the limits of their validation. 5.1.2. Gel bands for sealing cassettes. 5.1.3. Sampling pump. Each pump must be a battery operated, self-contained unit small enough to be placed on the monitored employee and not interfere with the work being performed.

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29 CFR 1910.1048 - Formaldehyde.

(a) Parts of vapor or gas per million parts of contaminated air by volume at 25 °C and 760 torr. (b) Milligrams of substance per cubic meter of air. When entry is in this column only, the value is exact; when listed with a ppm entry, it is approximate. (c) The CAS number is for information only. Enforcement is based on the substance name.

29 CFR 1926.1148 - Formaldehyde.

(e) Other cassettes, such as the Bell-mouth, may be used within the limits of their validation. 5.1.2. Gel bands for sealing cassettes. 5.1.3. Sampling pump. Each pump must be a battery operated, self-contained unit small enough to be placed on the monitored employee and not interfere with the work being performed.

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