Hellma DAkkS

Hellma® Analytics
Glass Filter Set to Check the Photometric and Wavelength Accuracy

Certified UV / Vis reference materials for the validation of spectrophotometers. Spectrophotometer can only provide accurate and reliable results over a longer period when they are checked regularly. Therefore the Hellma® Analytics calibration laboratory, accredited acc. to DIN EN ISO 17025, offers ready-for-use and DAkkS certified reference materials. They are traceable to the primary standards of the NIST (National Institute of Standards and Technology) and comply with the requirements of the major pharmacopoeias (EP, DAB, USP).

With the purchase of certified reference materials of Hellma® Analytics the user benefits from a clean, simple and efficient solution to check the spectrophotometer.
  • Outside dimensions (H x W x D): 48 x 12.5 x 12.5 mm.
Glass filter set type 666-S000 for checking photometric accuracy (neutral density glasses) and wavelength accuracy (Holmium glass), set consisting of: F0, F1, F2, F3, F4; one reference filter (F0), 3 neutral density glass filters (F2, F3, F4) with the absorptions: 0.25 / 0.5 / 1.0 certified at wavelengths: 440; 465; 546.1; 590; 635 nm and one Holmium glass filter (F1) certified at wavelengths: 279; 361; 453; 536; 638 nm, in high quality storage box with DAkkS calibration certificate.
Set:Wavelength nm:
666-S000:
Holmium oxide glass filter 666-F1
Neutral density glass filter 666-F2, 0.25 abs.
Neutral density glass filter 666-F3, 0.5 abs.
Neutral density glass filter 666-F4, 1 abs.
Empty filter mount F0, blank
279, 361, 453, 536, 638
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
666-S001:
Neutral density glass filter 666-F3, 0.5 abs.
Neutral density glass filter 666-F4, 1.0 abs.
Didymium glass filter 666-F7, 0.5 - 1.0 abs.
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
wavelength accuracy: 329, 472, 512, 681, 875
photometric accuracy: 270, 280, 297, 321, 342
666-S002:
Neutral density glass filter 666-F2, 0.25 abs.
Neutral density glass filter 666-F3, 0.5 abs.
Neutral density glass filter 666-F4, 1 abs.
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
 TypePUOrder No.in Stock 
 Complete glass filter set 666-S000 for checking photometric accuracy and wavelength accuracy15423858-Login / Registration
 Glass filter set 666-S00115436875-Login / Registration
 Glass filter set 666-S00215436876-Login / Registration