Neutral-Density Glass Photometric Standards – CA2M and CRM Brands
- nine (9) NDG filters – configured in four (4) different designated products
- transmittance span – nominal 0.1 %T to 90 %T
- absorbance span – nominal 0.04 to 3
- visible spectrum 440 nm to 635 nm
- certification at five (5) standard NIST test wavelengths [440.0 nm, 465.0 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
- 30 photometric reference values and expanded uncertainties
- [15 transmittance density format]
- [15 transmittance format]
- calibration measurement conditions
- instructional guidelines for use
– Product 7030930
– Product 7300930
– Product 4000930
- commercial version of NIST SRM 930 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 930 series
– Product 7021930
– Product 7201930
– Product 4001930
- commercial version of NIST SRM 1930 series
- three (3) NDG filters (nominal 1%T , 3%T and 50%T) (nominal 2.0 AU, 1.5 AU, 0.3 AU)
- traceable to NIST SRM 1930 series
– Product 7012930
– Product 7102930
– Product 4002930
- commercial version of NIST SRM 2930 series
- three (3) neutral-density glass filters (nominal 0.1%T , 0.3%T and 90%T) (nominal 3.0 AU, 2.5 AU, 0.04 AU)
- traceable to NIST SRM 2930 series
– Product 400X930
- custom configuration – two (2) or more neutral-density glass filters from different product designations listed above
- traceability to appropriate NIST transmittance SRM series filters
