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PARTICULATES NOT OTHERWISE REGULATED, TOTAL: METHOD 0500, Issue 2, dated 15 August 1994 - Page 3 of 3

equipment, procedures, and personnel used in the routine field samples. The relative standard deviation calculated from these replicates should be recorded on control charts and action taken when the precision is out of control [7].

MEASUREMENT:

Weigh each filter, including field blanks. Record the post-sampling weight, W₂ (mg). Record anything remarkable about a filter (e.g., overload, leakage, wet, torn, etc.)

CALCULATIONS:

Calculate the concentration of total particulate, $C$ (mg/m³), in the air volume sampled, $V$ (L):

$C={\frac {(W_{2}-W_{1})-(B_{2}-B1)}{V}}\times 10^{3}$ , mg/m³,

where:

$W_{1}$ = tare weight of filter before sampling (mg),
$W_{2}$ = post-sampling weight of sample-containing filter (mg),
$B_{1}$ = mean tare weight of blank filters (mg),

$B_{2}$ = mean post-sampling weight of blank filters (mg).
M

EVALUATION OF METHOD:

Lab testing with blank filters and generated atmospheres of carbon black was done at 8 to 28 mg/m³ [2,6]. Precision and accuracy data are given on page 0500-1.

REFERENCES:

[1] NIOSH Manual of Analytical Methods, 3rd ed., NMAM 5000, DHHS (NIOSH) Publication No. 84-100 (1984).

[2] Unpublished data from Non-textile Cotton Study, NIOSH/DRDS/EIB.

[3] NIOSH Criteria for a Recommended Standard … Occupational Exposure to Fibrous Glass, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-152, 119–142 (1977).

[4] 1993-1994 Threshold Limit Values and Biological Exposure Indices, Appendix D, ACGIH, Cincinnati, OH (1993).

[5] NIOSH Manual of Analytical Methods, 2nd ed., V. 3, S349, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-157-C (1977).

[6] Documentation of the NIOSH Validation Tests, S262 and S349, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-185 (1977).

[7] Bowman, J.D., D.L. Bartley, G.M. Breuer, L.J. Doemeny, and D.J. Murdock. Accuracy Criteria Recommended for the Certification of Gravimetric Coal Mine Dust Personal Samplers. NTIS Pub. No. PB 85-222446 (1984).

[8] Breslin, J.A., S.J. Page, and R.A. Jankowski. Precision of Personal Sampling of Respirable Dust in Coal Mines, U.S. Bureau of Mines Report of Investigations #8740 (1983).

METHOD REVISED BY: Jerry Clere and Frank Hearl, P.E., NIOSH/DRDS.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition