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Hellma 

Secondary standards for calibrating spectrophotometers

To maintain constant good measurement results, a regular review of the accuracy of the spectrophotometer is required. With the use of certified reference materials from Hellma Analytics, you make sure that your equipment qualifications meet the requirements of the pharmacopoeias and fulfill your internal quality requirements, at the same time you reach the international comparability of your measurement results. The certified reference materials (calibration standards) of the DIN EN ISO 17025 accredited Hellma Analytics calibration laboratory are traceable to the primary standards of NIST (National Institute of Standards and Technology) and meet the requirements of the major pharmacopoeias (e.g. EP, DAB, USP).

  • High quality of the measurement results
  • International comparability of measurement results
  • Meeting the requirements of the major pharmacopoeias (EP, DAB, USP)
  • Results traceable to NIST primary standards
  • 30 years warranty on the reference materials


Scope of supply: Certified reference materials (Calibration Standards) in quality storage box, DAkkS Calibration Certificate (DIN 17025), Handling guidelines
Check for photometric accuracy
7.626 372





7.626 372
TypePhotometric accuracy (absorbance)Product specific notesPKCat. No. 
667-UV305 Calibration set acc. to EP9
(UV60, UV600, UV14)
17626372
667-UV350C213 ... 261 nmLiquid filter calibration-Set, Niacin
(UV506, UV512, UV518, UV524, UV599)
16496276
667-UV60235 ... 350 nmLiquid filter UV60, Potassium dichromate 60mg/l16240039
667-UV600430 nmLiquid filter UV600, Potassium dichromate 600mg/l19190984
667-UV14 Reference filter UV14, Perchloric acid16240040
666-F2440 ... 635 nmNeutral density glass filter F2, 0.25 absorbance14722081
666-F3440 ... 635 nmNeutral density glass filter F3, 0.5 absorbance14722082
666-F4440 ... 635 nmNeutral density glass filter F4, 1.0 absorbance14722083