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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: B102

Chemical Abstracts Service (CAS) Registry Number: 7440-39-3

Exposure Limits

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 mg/m3 TWA

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 960 Liters
    minimum volume: 480 Liters
    maximum flow rate: 2.0 L/min
    current analytical method: Atomic Absorption Spectroscopy; AAS
    method reference: 2 (OSHA ID-121)
    sampling and analytical error: 0.19
    method classification: Partially Validated
    note: Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period. Solubility of the Barium compounds, if known, should be transmitted to SLTC.
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