User Guide

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

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This reference is useful as a resolution check for instruments with spectral bandwidths less than 1 nm. It consists of 0.01 ml benzene liquid sealed by heat fusion into a UV grade quartz cell. At room temperatures, the benzene is in the vapour phase.

The benzene vapour spectrum contains characteristic features that may or may not be resolved, dependent upon the spectrophotometer SBW. This is illustrated in the following spectra:

 

RM-BZ

Benze-Vapour-Spectra

The peaks at 253.49 nm and 259.56 nm  (arrowed) should be visible at a SBW of 0.2 nm or less.
Note: Benzene vapour will not work well with a photodiode array spectrophotometer as this instrument type does not measure a continuum and the peaks will usually not be sufficiently well resolved to be useable.

 

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.