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Chemical Sampling Information (CSI)
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General Description

Synonyms: Grain Dust prior to 9/1/89

OSHA IMIS Code Number: G109

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 4 mg/m3 TWA; The value is for particulate matter containing no asbestos and <1% crystalline silica.

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 4 mg/m3 TWA

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns
    maximum volume: 960 Liters
    maximum flow rate: 2.0 L/min
    current analytical method: Gravimetric
    method reference: 11, 12
    sampling and analytical error: 0.10
    method classification: Fully Validated
    note: Field method, do not submit sample to the Salt Lake Technical Center. Noncompliance can be based on gross weight without laboratory analysis. If the filter is not overloaded, samples may be collected up to an 8-hour period.

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