Thermo Fisher Scientific NTRM* Spectrophotometer Performance Qualification Filter Sets are produced in our NVLAP-accredited** laboratory to ensure that you have total confidence in your analytical results.
NTRM 930 (#9423CRM9300E)
NTRM 1930 (#9423CRM1930E)
NTRM Performance Verification Set (#9423CRM9400E)
- NVLAP accreditation ensures that your spectrophotometric filter reference materials from Thermo Fisher Scientific meet the technical specifications and requirements*** as determined by the NIST Analytical Chemistry Division.
- Designed to verify the accuracy of all well-designed Visible and UV-Visible Spectrophotometers
- Absorbance filters traceable to NIST and accredited to ISO 17025 through NVLAP
- Wavelength filter traceable to both NIST and NPL and accredited to ISO/IEC 17025
The filter sets include:
- neutral density filters (for photometric calibration in Absorbance or Transmittance; calibrated at 5 wavelengths)
- 'clear' filter holder (for instrument zero)
- wavelength check filter (holmium glass with certified wavelengths; included only in the 9423CRM9400E NTRM Performance Verification Set)
*NTRM is defined by NIST as "a commercially produced reference material with a well-defined traceability linkage to existing NIST chemical measurement standards."
**NVLAP Lab Code: 200462-0
*** Technical requirements are contained in NIST Special Publication SP260-140: Technical Specifications for Certification of Spectrophotometric NTRMs
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