CRM 500

Metal-on-Quartz Photometric Standards

  • three (3) FS-MOQ filters – available as single filters or sets
  • transmittance span – nominal 10 %T to 90 %T
  • absorbance span – nominal 0.04 to 1
  • spectral range 250 nm to 635 nm
  • certification at ten (10) wavelengths [250.0 nm, 280.0 nm, 340.0 nm, 360.0 nm, 400.0 nm, 465.0 nm, 500.0 nm, 546.1 nm, 590.0 nm, 635.0 nm]
  • calibration expiration two (2) years

Primary Application

  • routine validation of photometric (transmittance and absorbance) scales of UV/VIS spectrophotometers
  • regulatory compliance – USP analytical spectrophotometer qualification

Certificate of Calibration

  • 60 photometric reference values and expanded uncertainties
    • [30 transmittance density format
    • [30 transmittance format]
  • calibration measurement conditions
  • instructional guidelines for use

– Product Set 5002031

  • equivalent to NIST SRM 2031 series
  • three (3) FS-MOQ filters (nominal 10%T , 30%T and 90%T) (nominal 1.0 AU, 0.5 AU, 0.04 AU)
  • traceable to NIST SRM 2031 series