Standard Reference Material (SRM®) 1650b is diesel particulate matter and is intended for use in evaluating analytical methods for the determination of selected polycyclic aromatic hydrocarbons (PAHs) and nitro-substituted polycyclic aromatic hydrocarbons (nitro-PAHs) in diesel particulate matter and similar matrices. Reference or information values are also provided for total extractable mass, particle-size distribution, specific surface area, and mutagenic activity. All of the chemical constituents for which certified, reference, and information values are provided in NIST-1650b are naturally present in the diesel particulate material. NIST-1650b was prepared from the same bulk diesel particulate material that was issued previously in 1985 as NIST-1650 and in 2000 as NIST-1650a . A unit of NIST-1650b consists of a bottle containing approximately 200 mg of diesel particulate material. Certified values /// Sample value(s) - please ask for current certificate.
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