Zurück zu Ihrem Suchergebnis

Beschreibung

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.