Holmium Glass

Description Holmium glass filter
Primary Usage Verify the wavelength scale of UV/Visible spectrophotometers
Useable Range 241nm to 640nm, instruments with SBW of less than 10 nm
Physical Configuration Stress Free glass filter mounted in anodized aluminum holder
NIST Traceability Each set is supplied with a Certificate of Analysis and NIST Traceability
ISO Accredited Accredited by UKAS ISO 17025, ISO Guide34 and ISO 9001


Holmium Liquid Filter

Description Holmium oxide (4%) in perchloric acid (10%) sealed in a quartz cell
Primary Usage Verify the wavelength scale of UV/visible spectrophotometers
Useable Range 240nm to 650nm, 14 traceable absorbance peaks
Physical Configuration Far UV quartz cell that has been permanently sealed by heat fusion
NIST Traceability Each set is supplied with a Certificate of Analysis and NIST Traceability
ISO Accredited Accredited by UKAS ISO 17025, ISO Guide34 and ISO 9001


Didymium Glass Filter

Description Didymium glass filter
Primary Usage Verify the wavelength scale of Visible spectrophotometers
Useable Range 430nm to 890nm, instruments with SBW of less than 10 nm
Physical Configuration Stress Free glass filter mounted in anodized an aluminum holder
NIST Traceability Each set is supplied with a Certificate of Analysis and NIST Traceability
ISO Accredited Accredited by UKAS ISO 17025, ISO Guide34 and ISO 9001

Didymium Liquid Filter

Description Didymium (neodymium and praesodymium) perchloric solution permanently heat sealed in a quartz cell
Primary Usage Verify the wavelength scale of UV/visible spectrophotometers
Useable Range 290nm to 870nm, spectral bandpass of 5nm or less
Physical Configuration Far UV quartz cell that has been permanently sealed by heat fusion
NIST Traceability Each set is supplied with a Certificate of Analysis and NIST Traceability
ISO Accredited Accredited by UKAS ISO 17025, ISO Guide34 and ISO 9001

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