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Secondary Calibration Standards for Spectrophotometers, Hellma®

Certified UV/Vis calibration standards for spectrophotometers
To supply accurate results over the long run, spectrophotometers need to be calibrated in regular intervals. To this end, the Hellma Analytics calibration lab certified pursuant to DIN EN ISO 17025 offers ready-to-use, DAkkS certified calibration standards. Using UV/Vis calibration standards from the accredited Hellma calibration lab guarantees that the calibration operations performed are traceable to the NIST (National Institute of Standards and Technology) primary standards and the standards of the major pharmacopoeias (EP, DAB, USP).
The certified Hellma Analytics reference materials provide the user with a clean, easy, and efficient solution for checking the spectrophotometer.
Outside dimensions (H×W×D): 48 mm × 12.5 mm × 12.5 mm


(1) Glass filters sets

for inspection of the spectrophotometers in respect of wavelength accuracy and photometrical accuracy

Type

Complete filter set
consisting of

Wavelength
nm

Order No.

€/pc

666-S000

Holmium oxide glass filter 666-F1
Neutral density filter 666-F2, 0.25 abs.
Neutral density filter 666-F3, 0.5 abs.
Neutral density filter 666-F4, 1.0 abs.
Filter holder F0, empty as reference

279, 361, 453, 536, 638
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635
440; 465; 546,1; 590; 635

10 55 16660

666-S001

Neutral density filter 666-F3, 0.5 abs.
Neutral density filter 666-F4, 1.0 abs.
Didymium glass fliter 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
Photometrical accuracy: 270, 280, 297, 320, 340

10 55 16663

666-S002

Neutral density filters 666-F2/-F3/-F4

440; 465; 546,1; 590; 635

10 55 16662




(2) Liquid filters sets

for inspection of the spectrophotometers in respect of stray light behavior, resolution power, photometrical accuracy and wavelength accuracy pursuant to the European Pharmacopoeia

Type

Use

Contents

Wavelength
nm

Order No.

€/pc

667-UV100

Testing for stray light

Liquid filter UV1, potassium chloride
Reference filter UV12, purified water

Cut-off 200

10 55 16678

667-UV200

Testing the spectral resolution

Liquid filter UV6, toluene in hexane
Reference filter UV9, hexane

Scan from 265-270

10 55 16676

667-UV305

Testing the photometric accuracy

Liquid filter UV60, potassium dichromate 60 mg/l
Liquid filter UV600, potassium dichromate 600 mg/l
Reference filter UV14, perchloric acid

235, 257, 313, 350
430

10 55 16672

667-UV005

Testing the wavelength accuracy

Liquid filter UV5, holmium oxide in perchloric acid

241, 287, 361, 536, 640

10 55 16679

667-UV003

Complete set

Type 667-UV100/UV200/UV305/UV005

10 55 16677



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