NIST 2031b compliant kit for photometric accuracy and stray light performance in the UV/VIS range (2

Firefly Scientific's equivalent of the NIST SRM 2031 calibration reference kit.



  • Validation of photometric accuracy in the UV/VIS range (200-700nm) 
  • Validation of stray light performance in the UV/VIS range (200-700nm)
  • NOTE: FF-FUV-0.04 is not suitable for stray light performance!

Delivery includes:

  • FF-FUV-0.04 calibration standard 0.04AU (90% transmission)
  • FF-FUV-0.5 calibration standard 0.5AU (30% transmission)
  • FF-FUV-1.0 calibration standard 1.0AU (10% transmission)
  • FF-A30 holder
  • FF-CASE-P4 case
  • Calibration certificate


  • Tolerance of the photometric accuracy filters: FF-FUV-0.04 +/- 0.0019AU, FF-FUV-0.5 +/- 0.0039AU, FF-FUV-1.0 +/- 0.0042AU
  • Wavelength range: 200-700nm. Standard peaks in calibration certificate: 250, 280, 340, 360, 400, 465, 500, 546.1, 635nm 
  • External dimensions of the individual filters: 12.5 x 12.5 x 45.0mm

Advantages of Firefly Scientific's FUV photometric accuracy filters:

  • Highly accurate and reproducible calibration of your spectrophotometer
  • Never has to be replaced
  • Never needs recalibrating if handled and stored correctly
  • Scratch-resistant coating protects optical surfaces
  • Can be used in any spectrophotometer (with standard 12.5 x 12.5 x 45.0mm holder)
  • Fulfils or surpasses NIST-2031b requirements and tolerances
  • NIST traceable
Pictures shown are for illustration purposes only and may vary from the actual product in shape, colour and design
Product no.:FF-NIST-2031b-KIT
3,002.76 €*

Out of stock, request delivery time



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