Item no.
NIST-1989
Unit
3 x 20 mL (1 each)
Shipment details
No Dangerous Good /not restricted
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Description
This Standard Reference Material (SRM) is intended primarily for use as a particle size standard to validate the precision of sizing methods of irregular shaped particles over an approximate size range of 100 um to 220 um. NIST-1989 has been developed to mimic the optical properties of visible aggregated proteinaceous particles. A unit of NIST-1989 comprises 3 vials, with each vial containing approximately 20 mL of an aqueous suspension of SU-8 photoresist particles in a solution of 0.02 % sodium azide and 0.01 % surfactant [4-(1,1,3,3-Tetramethylbutyl)phenyl-polyethylene glycol] by mass concentration. The SU-8 photoresist particles were prepared by fabrication of particles onto a sacrificial silicon wafer using a photolithographic process, followed by release from the wafer, purification, and dilution. For further details please see certificate.
Miscellaneous
Certificate of Analysis (specimen)
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Product data sheet
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NIST provides over 1300 Standard Reference Materials® as well as articles and practice guides describing the development, analysis and use of SRMs.
NIST Standard Reference Materials are used by analytical laboratories in industry, academia and government in order to facilitate commerce and trade and to advance research and development. The SRMs are produced by the engineering laboratory, the material measurement laboratory, and the physical measurement laboratory at NIST. They are available for chemical composition, physical properties, and engineering materials.