Automatic circle polarimeter for standard applications continuously measuring

Fully electronic circle polarimeter with following features:

• Accurate measuring of the optical activity of solutions according to ICUMSA, O.I.M.L., Australian Standard K157, European and American Pharmacopeia
• Direct reading of the rotation angle without mechanical transmission is resulting in guaranteed unmatchable precision over the entire measuring range
• Recommended for routine analysis
• Short measuring times, no mechanical abrasion
• The measurement is carried out constantly without pressing a button so that flow through measurements can easily be performed
• The customer can program up to 10 special scales (glucose, mono sodium glutamate or other) and 4 methods
• LED illumination unit, life time guarantee
• Automatic temperature compensation if using appropriate polarimeter tubes
• Indication of the optical density
• Serial to Ethernet converter for data transfer to PC
• The instrument has a versatile software for test routines and configurations
• GLP/GMP conform documentation
• 21 CFR part 11 ready, appropriate software “Aquisys 2008“ optionally available
• High quality “Made in Germany“, consultation and service at site possible

Checking/Calibration

As the interference filters, which are used in circle polarimeters, suffer from age- and environment depending alteration, it might be necessary to check the wavelength accuracy periodically and to readjust the wavelength in case it’s out of range. This can be done with sucrose solutions or quartz control plates since the optical properties of sucrose solution and quartz are almost identical. Sucrose solutions are not very stable and have to be renewed regularly. Checking a polarimeter by a quartz plate is a much more reliable method.

Quartz control plates are long-term stable examination standards for polarimeter. The sample room of SCHMIDT + HAENSCH polarimeter permits the vertical movement of quartz control plates as well as the free rotation (±360°) around their own axis. Only by a rotation it is possible to check if the plates are mounted without strain and permit an examination of the polarimeter according to processing regulations of international standards like ICUMSA and OIML.