105.12 - Respirable Materials

SRMs 1878a and 1879a are crystalline silica materials with particles in the respirable range. They are intended for use in determining, by x-ray diffraction, the levels of respirable silica in an industrial atmosphere according to National Institute for Occupational Safety and Health (NIOSH) Analytical Method 7500 or equivalent methods. NOTE:These SRMs are not certified for particle size.

Also see Table 105.10 Respirable Materials on Filter Media

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only

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	SRM	Description	Unit of Issue		Measurand(s)
	1648a Now Selling	Urban Particulate Matter	2 g		Certified: 24 elements Reference values: 8 elements
	1649b Now Selling	Urban Dust	2 g		Certified: 23 PAHs, 13 PCBs, 4 pesticides Reference values: 38 PAHs, 16 nitro-PAHs, 49 PCBs, 34 pesticides
	1650b Now Selling	Diesel Particulate Matter	200 mg		Certified: 30 PAHs, 6 nitro-PAHs Reference values: 45 PAHs, 16 nitro-PAHs
	1877 Now Selling	Beryllium Oxide Powder	20 g		35.76 % beryllium
	1878a Out of Stock	Respirable Alpha Quartz	5 g		93.7 % alpha quartz
	1879a Now Selling	Respirable Cristobalite	5 g		88.2 % cristobalite
	1975 Now Selling	Diesel Particulate Extract	4x1.2 mL		Certified: 8 PAHs, 4 nitro-PAHs Reference values: 23 PAHs, 15 nitro-PAHs, mutagenicity, residue mass
	2583 Now Selling	Trace Elements in Indoor Dust	8 g		Certified: 5 elements
	2584 Now Selling	Trace Elements in Indoor Dust	8 g		Certified: 5 elements Reference values: 10 elements
	2585 Now Selling	Organic Contaminants in House Dust	10 g		Certified: 33 PAHs, 30 PCBs, 4 pesticides, 15 PBDEs Reference values: 33 PAHs, 12 PCBs, 10 pesticides, 3 PBDEs
	2786 Now Selling	Fine Particulate Matter (<4 µm)	1 bottle		Certified: 25 PAHs, 3 nitro-PAHs, 2 PBDE, 6 elements Reference values: 26 PAHs, 4 nitro-PAHs, 12 elements, 3 sugars, 5 PBDE, 12 dioxins, 15 furans
	2787 Now Selling	Fine Particulate Matter ( <10 µm)	1 bottle		Certified: 23 PAHs, 3 nitro-PAHs, 2 PBDE, 5 elements Reference Values: 27 PAHs, 3-nitro-PAHs, 5 PBDE, 13 elements, 3 sugars, 12 dioxins, 15 furans
	2975 Now Selling	Diesel Particulate Matter	1 g		Certified: 11 PAHs Reference values: 28 PAHs, 17 nitro-PAHs, particle-size, total extractable mass