Optical Polarimeters

Polarimeter instruments measure the angle of rotation of optically active substances. The measurement of the angle of rotation is an important quality control measurement and is commonly used in the pharmaceutical, chemical, cosmetic and food & beverage industries. Optical rotation measurement allows you to ascertain the identity and quality of substances as well as their concentration in mixtures. It can also indicate the progress of a reaction and conversions. For more information about optical rotation Polarimeter technology and applications, click here to visit the A KRÜSS Optronic Campus.

Automatic & Manual Models

A.KRÜSS Optronic manufactures a variety of optical laboratory polarimeters to suit your needs, from industry and R&D to education. These include manual polarimeters, pharmaceutical polarimeters, sugar polarimeters, digital polarimeters, semi-automatic polarimeters and automatic polarimeters.

A.KRÜSS polarimeters offer a solution for any budget/application:

P8000 Series:  Professional Grade for Unparalleled Speed & Accuracy

  • The Fastest polarimeter instruments in the World! Only 1 second measuring time regardless of the sample’s angle of rotation.
  • High measurement accuracy of up to +/- 0.002°
  • Measurement up to an optical density of 3.0
  • Reliable temperature compensation with solutions for any need:
    • P8000/8100 without temperature control (ICUMSA temperature compensation)
    • P8000-T/P8100-T with water bath temperature control
    • P8000-P/P8100-P with Peltier temperature control
    • P8000-TF/P8100-TF with water bath control and flow-through function
  • Easy-to-use interface with touch screen display
  • Pre-defined scales for optical rotation, specific rotation, International Sugar Scale content and concentration or define your own scales based on tables or formulas.
  • Easy filling and cleaning with options for manual, semi-automatic or automatic filling
  • Complete documentation of all measured values and parameters with flexible data export (printer, USB, Ethernet, RS-232).
  • User administration features with two authorized levels
  • Complies with 21CFR Part 11, GMP/GLP, USP, BP, JP, Ph. Eur, FDA, ISO, ICUMSA, OIML, ASTM, AOAC, NIST, HACCP

P3000 Series:  Economical yet Powerful for Many Applications

  • Economical solution for applications for which a measurement accuracy of +/- 0.01° is sufficient
  • Fast, 1 second measurement time like the P8000 Series Polarimeters
  • Reliable temperature compensation following ICUMSA sugar scale guidelines
  • Measured values displayed as optical angle of rotation (°) or on the International Sugar Scale (°Z)
  • Measurement up to an optical density of 3.0
  • Easy to use touchscreen display
  • Compliant with ICUMSA, USP, BP, JP, Ph. Eur, NIST, GLP, ASTM

P1000-LED Polarimeter:  Best for Teaching & Basic Lab Applications

  • Ideal for basic lab applications and for training in industry and at the college/university.
  • Measures optical rotation according to the half shade principle
  • Measurement results are read through an eyepiece and two noniuses
  • Low maintenance with high performance LED with a life 2000 times that of a standard sodium discharge bulb
  • Includes 100 and 200-mm length measurement tubes with debubbler

A.KRÜSS Optronic Products



  • Pharmaceutical
    • Determination of sugar as an ingredient of pharmaceutical agents
    • Purity control and content determination
    • Determination of the stereochemical composition and mutarotation
    • Characterization of new synthetic substances
  • Chemical
    • Concentration determination and purity control
    • Monitoring of chemical processes during production of optically active substances
    • Reaction kinetic analysis
  • Sugar Industry
    • Determination of sugar concentration in raw materials, preliminary, intermediate and end products
    • Monitoring of chemical processes such as the manufacture of invert sugars
    • Purity control
  • Food and Beverage
    • Characterization, quality and purity of raw materials and end products
    • Determination of sugar concentration in beverages and candies
    • Determination of sugar types and sugar degradation
  • Fragrances and Essential Oils
    • Quality Control of Raw Materials
    • Additives monitoring during production

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