Autopol 4

The digital polarimeter is an instrument to measure optical rotation. From optical rotation, you can also derive the value of specific rotation of a liquid sample. The biggest application for this system is in the field of pharma. Also other industries like sugar, food, flavors and fragrances, chemicals, and intermediates use polarimeter in their labs.

How a digital polarimeter works?

The digital polarimeter has a light source. The light from it, which would naturally travel in all directions, is polarized with a polarizer. When the polarized light travels through the sample, due to the nature of the sample, the light would turn to the left or to the right. Then, with an analyzer polarizer, we find out whether the light has turned to the right or to the left and also by how many degrees. The result thus expressed in degrees is optical rotation. From this, other results like specific optical rotation, degree Z, and degree ISS can be calculated.

Rudolph Research Analytical (RRA) is one of the earliest digital polarimeter manufactures and produces multiple models varying based on the:

  • Number of wavelengths
  • Accuracy
  • Resolution
  • Ability to maintain temperature of the sample through Peltier
  • Ability to withstand acidic samples
  • Adherence to 21 CFR Part 11

In Rudolph’s bouquet of digital polarimeter, the Autopol I is the entry-level model, the Autopol VI is the top-end model used for cutting-edge research.

Rudolph is the only manufacturer offering National Voluntary Laboratory Accreditation Program (NVLAP) certified National Institute of Standards and Technology (NIST) traceable QCPs. They are available in different kinds for positive rotation, negative rotation, low rotation, and so on.

The Autopol is the single largest selling polarimeter and all the models have the following features:

  • Microprocessor-controlled with a touch-sensitive keypad and a colour display
  • Display of optical rotation, specific rotation, degree Z, and degree ISS
  • Ability to maintain temperature through electronic heating and Peltier cooling technology in the ‘TempTrol’ models
  • Compatible with sample cells of upto 200mm path length
  • Data storage on an 8GB non-removable CompactFlash card
  • Built-in USB, RS232, and Ethernet ports

For further details please visit: http://rudolphresearch.com/products/polarimeters/

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