Hellma Certified Reference Materials
Hellma Analytics reference materials for UV/Vis spectroscopy meet internationally recognized standards, such as the Good Laboratory Practice (GLP) or ISO 9001:2000, that recommend the performance of the spectrophotometers to be checked at regular intervals.
The calibration standard includes the checking for photometric accuracy (absorbance), wavelength accuracy, spectral resolution, stray light as well as absorbance linearity. Glass and liquid filters cover these testing parameters in the UV- and visible range.
Hellma’s calibration laboratory is accredited according to the ISO 17025 and measurements are traceable to primary standards of the National Institute of Standards and Technology (NIST).
Reference material to check photometric and wavelength accuracy is also available for microplate readers.