Neutral-Density Metal-on-Quartz Photometric Standard
- three (3) filters
- transmittance span – nominal 10 %T to 90 %T
- absorbance span – nominal 0.04 to 1
- ultraviolet-visible spectrum 250 nm to 635 nm
- certification at ten (10) standard NIST photometric test 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
- 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
- metrological traceability statement
- instructional guidelines for use
– Product 5002031
- commercial version of NIST SRM 2031 series
- three (3) NDG filters (nominal 10%T , 20%T and 30%T) (nominal 1.0 AU, 0.7 AU, 0.5 AU)
- traceable to NIST SRM 2031 series
