CRM 500

Metal-on-Quartz Photometric Standards – STRANASKA ADVANTAGE

The production and certification of our CRM 500 metal-on-quartz (MOQ) photometric standard is under the direct supervision of Dr. Jerry Messman, Senior Analytical Scientist and Managing Director. During his extended tenure at the National Institute of Standards and Technology (NIST), Dr. Messman had immediate responsibility for the high-accuracy spectrophotometry program which continued to produce and certify the original SRM 2031 metal-on-quartz standard. This unparalleled distinction of Dr. Messman’s scientific metrological background uniquely qualifies Stranaska Scientific as the only commercial laboratory in which specific production and certification designs of its CRM 500 photometric standard are underpinned by a credentialed analytical scientist and leader with proven and documented National Metrology Institute (NMI) experience, expertise and NIST heritage.

Product 5002031

  • equivalent to NIST SRM 2031 series
  • three (3) optical 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
  • 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
  • available as single filters, 2-filter sets or 3-filter sets

Primary Application

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

Certificate of Calibration

  • photometric reference values and expanded uncertainties
  • metrological traceability statement
  • calibration measurement conditions
  • instructional guidelines for use

Special Discounted 2-Filter CRM 500 Set

2 MOQ Filters

  • Nominal 10%T and 30%T
  • Nominal 1.0 AU and 0.5 AU