Calibration Standards

Glass Filters for spectrophotometers

 

With the accreditation according to DIN EN ISO 17025, Hellma GmbH & Co KG has the only accredited calibration laboratory in Germany that produces and certifies liquid and glass filters made for testing spectrophotometers. Thus users ensure the traceability of their calibrations carried out to references of the NIST, by which an international comparability of measurement results is assured. As a result, procedures in laboratories gain greater transparency and improved protection of the measurement results.

 

 

Type: 666.000

Order Number: 666-000

 

Usage	Consisting of	Material	Wavelength nm
Checking the wavelength and photometric accuracy	666-F1 666-F2 666-F3 666-F4 666-F0	Holmium Oxide Glass Filter Neutral Density Glass Filter NG 11 Neutral Density Glass Filter NG 5 Neutral Density Glass Filter NG 4 Empty Filter Mount	279, 361, 454, 536, 638 440; 465; 546.1; 590; 635 440; 465; 546.1; 590; 635 440; 465; 546.1; 590; 635

 

 

Available individually

 

Type	Order Number	Usage	Material	Wavelength nm
666-F1	666-000F1-339	To check the wavelength accuracy	Holmium Oxide Glass Filter	279, 361, 454, 536, 638
666-F2	666-000F2-39	To check the photometric accuracy (nominal absorbance 0.25)	Neutral Density Glass Filter NG 11	440; 465; 546.1; 590; 635
666-F3	666-000F3-38	To check the photometric accuracy (nominal absorbance 0.5)	Neutral Density Glass Filter NG 5	440; 465; 546.1; 590; 635
666-F4	666-000F4-37	To check the photometric accuracy (nominal absorbance 1.0)	Neutral Density Glass Filter NG 4	440; 465; 546.1; 590; 635
666-F202	666-000F202-36	To check the photometric accuracy (nominal absorbance 1,5)	Neutral Density Glass Filter NG 3	440; 465; 546,1; 590; 635
666-F203	666-000F203-36	To check the photometric accuracy (nominal absorbance 2,0)	Neutral Density Glass Filter NG 4	440; 465; 546,1; 590; 635
666-F7	666-000F7-323	To check the photometric accuracy To check the wavelength accuracy	Didymium Glass Filter BG 36	270, 280, 300, 320, 340 329, 472, 512, 681, 875
666-F0	666-F0-71	Empty Filter Mount

 

 

Complete Set 666.000
Outside dimensions: H x W x D: 48 mm x 12.5 mm x 12.5 mm