Regular testing of spectrophotometers with certified reference materials secures the traceability of measuring results to international standards (e.g. NIST, ASTM). Hellma reference materials for UV/Vis spectroscopy ensure conformity with regulations (Ph. Eur., USP) and provide for highest process transparency.
In order to calibrate spectrometers, the Hellma Analytics’ Calibration Laboratory, accredited according to DIN EN ISO 17025, offers easy-to-handle, ready-for-use certified UV/ Vis reference materials - available as glass and liquid filters. The distinguishing feature is that they are usable trouble-free for many years - thus users profit from a clean, easy and efficient solution for their qualification tasks. Correct measuring results are the basis for safe manufacturing processes and quality control in many areas.
In order to achieve correct measuring results in the long run, one should qualify the following parameters regularly:
- Wavelength accuracy
- Photometric accuracy
- Spectral resolution
- Level of stray light
Advantages using Hellma Reference Materials:
- Cost and time savings
- Environmentally friendly
- No waste or complex preparation of solutions
- Certainly correct measurement results
- Results are traceable to international standards (NIST)
- Conformity with the regulations (Ph. Eur., USP)
The application is very easy and doesn’t require any specific preparation (Watch video for more details). Insert the suitable glass or liquid filter into the cell holder and start the measurement or scan. Then compare the obtained absorption values or peaks with the values stated on the included DAkkS Calibration Certificate. Anyone who qualifies his spectrophotometer regularly like this, will secure and document the traceability of measurement results to international standards, e.g. to primary standards of NIST (National Institute of Standards and Technology). In this way you will feel safe before the next audit.