User Guide

For an introduction to the application and use of Certified Reference Materials in absorption spectrophotometry

         & HOW TO ORDER


This reference uses Starna’s proven and universally accepted UV and visible Certified Reference Materials for the qualification of 96-well plate readers. It will be accepted by Pharmacopoeias and Standardisation Bodies as evidence of instrument qualification. Full details, spectra, etc of the individual reference materials may be found in the appropriate Starna data sheets.

The reference contains six liquid CRMs in a black anodised aluminium microplate, manufactured to the Society of Biomolecular Screening (SBS) dimensional standards. The heat sealed, liquid filled cell format utilises 5mm path length cells that have a unique (patent applied for) bubble trap to minimise measurement errors. Potassium dichromate solution is used as an absorbance reference, and holmium oxide solution as a wavelength reference.

Absorbance values for the potassium dichromate references are certified at 235, 257, 313, & 350nm and range from approximately 0.1 A to 1.0 A.  The Holmium solution has 14 certified peak values from 240 nm to 640 nm.



A Certificate of Calibration and Traceability and full instructions for use are provided with each Reference Material. Starna Scientific is accredited to both ISO 17034 (4001) as a Reference Material producer, and ISO/IEC 17025 (0659) as a Calibration Laboratory for optical reference measurements. Starna offers a Lifetime Guarantee on all its Reference Materials.