Optical Rotation is measured on a Perkin Elmer 341 Polarimeter. This high-resolution instrument has an accuracy of ±0.0020. The rotation can be measured at 5 wavelengths, 589nm, 578nm, 546nm, 436nm and 365nm and the Polarimeter cell is temperature controlled with a Peltier unit, normally operated at 25°C.
Important applications include:
Characterisation of newly synthesised compounds
Quality control, especially of pharmacological substances which may depend on their enantiomeric purity.
We are able to offer a fast service for specific rotation. Use of an ultra micro balance combined with a 100mm micro cell allows accurate measurement with only 2ml of solution.
Sample Requirements: Typically 2-30mg per analysis.
Other Requirements: Required concentration, solvent and temperature.