Scanning Polarimeter - UniPol Series

Features of Unipol Series

  • Automatic, digital, scanning Polarimeter
  • 21 CFR part 11 ready (software optional)
  • 4 independent measurement methods and up to 10 programmable scales
  • Stand alone instrument / printer connection / networking capabilities.
  • User programmable display
    (individually for ea. of the 4 methods)
  • Displays the optical density of the sample
  • Automatic multiple measurement with statistical evaluation
  • Automatic sample ID generation configurable
  • Measurement of the variation of polarisation due to reaction kinetics programmable
  • Remote operation from PC possible

UniPol L series Full Circle Polarimeters

The UniPol series includes polarimeters very similar to the Polartronic range of polarimeters in terms of range and accuracy but uses a discrete and progammable measurement methods as opposed to the continous method used in the Polartronics. The Unipol is a single wavelength unit, normally 589nm, but others are available on request. The econonical L model designed for more routine and educational applications provides a resolution of 0.01 degree. The L1000 and 2000 offer higher resolution as shown below. The UniPols determine the optical activity of a solution by means of a scanning polarizer. This method ensures constant resolution throughout the range, high accuracy and repeatability. Also these polarimeters are up to 5 times faster than competitive instruments. The UniPol series are automatic scanning polarimeters designed to provide discrete and programmed measurement.  The UniPol series work with standard Polarimeter tubes and continuous flow tubes. You can also order special tubes for temperature measurement and small micro-tubes for precious samples. There are several models to choose from suitable for routine lab work, and saccharimetry. These instruments are ideal for quality control and research because of their outstanding specification and performance at a reasonable price. The L model, single wavelength, is particulary suitable for educational applications thanks to its low cost and wide range of capabilities.

The software implements sample identification numbers, statistics for multiple measurements and user definable printouts individually configurable for each of the 4 available methods. All models of the Unipol L-series conform with the regulations of the European and American Pharmacopoeias as well as to the GLP/GMP standards.

Temperature compensation is automatic when used with polarimetric tubes or quartz control plates with a temperature sensor installed. The Unipol L-series displays the actual sample temperature and compensates automatically for temperature deviation from the standard temperature. The corrected scale value (e.g. °Z, °S …) is displayed.

Various polarimeter tubes are available for different applications. With the use of micro tubes, even the smallest sample volumes are sufficient. The polarimeters Unipol L series are equipped with plug in connectors for the temperature sensor of the polarimetric tubes. If polarimeter tubes or quartz control plates with integrated temperature sensor are used the current sample or quartz temperature is indicated at the display. All models of Unipol L series are available as so-called "P version" for using polarimeter tubes fitted with Peltier elements.temperature contolled polarimeter tube

The Unipol L pictured with T-Cell polarimeter tubes with an integrated electronic Peltier-system -->

Additional features include: Automatic adjustment of beam diameter, necessary for the use of micro tubes, and AWC (Automatic Wavelength Control) - Automatic calibration routine; Bright clear LCD display shows absolute rotation in degrees or sugar degrees or Z*2 sugar degrees. When a new sample is placed in the sample compartment the instrument automatically finds and displays the new reading within a couple of seconds. Scales are changed with the up down arrows. 'Reset' zeros the instrument when you first switch on.The Unipols include a ready to use RS232 data port which enables transmission of the data to a PC or serial printer


The UniPol series circle polarimeters are suitable for concentration and purity analysis in many industrial and scientific applications including:

Food Industry

Sugar, starch, milk and dairy products, wine, juice, food auxiliary means, amino acids

Pharmaceutical Industry

Enantiomers, chiral substances like soaps, amino acids, organic substances, glucose, fructose, purity control (codeine, cocaine, nicotines, morphine sulfate), ascorbic acid, menthol, camphor, drug recognition


Purity of essential oils and odiferous agents

Chemical Industry

Analysis of optically active substances and structural analyses, inorganic ions in conjunction with optically active substances (e.g. - Bi, - Cd, - Cu, - Fe, - Hg), regulation of materials in solutions, organic substances, turpentine’s, Benzene, acids, esters etc.


Chiral metabolic compounds like sugar and albumin content in urine, hormones, poison analyses, testosterones, enzymes and toxicology


Model Model UniPol L Standard Instrument UniPol L 1000 UniPol L 2000
Scales optical rotation, international sugar scale, concentration, user defined
Measureing Range ±360* / ± 259* Z
Units of measure Specific Rotation °, Sugar Concentration % Sugar Scale °Z
Resolution ±0.01* /±0.02* Z ±0.001* / ±0.01* Z ±0.001* / ±0.01*Z
Precision ± 0.01* / 0.03* Z ± 0.005* / 0.02* Z ± 0.005* / 0.02* Z
0 - 99°C
Temperature precision ± 0.03°C
Wavelength 589 nm one wavelength fixed(others on request) 589 nm (others on request) one wavelength fixed, suitable for micro tubes, automatic calibration routine implemented 405 and 589nm two wavelengths fixed, suitable for micro tubes, automatic calibration routine implimented
Interface 1 parallel, 1 PS2, 2 serial RS232, USB/Ethernet Converter opt.
Measuring Tubes up to 200mm length
Light Source LED
Compliance European and American Pharmacopeia, GLP/GMP conform documentation and printout,
21 CFR Part 11 ready, optional PC software “Aquisys 2008“ available

Ordering Information

Unipol L 589 single wavelength SH 01950
Unipol L 589 P for temperature controlled tubes SH 10499
Unipol L 546 single wavelength SH 10500
Unipol L 546 P for temperature controlled tubes SH 11812
Unipol L 1000 SH 05000
Unipol L 1000 P for temperature controlled tubes SH 05001
Unipol L 2000 SH 05500

All models includes 100 mm tube with filler cap, tool kit and instructions.
Other wavelengths available on request

T-Cell polarimeter tubes with an integrated electronic Peltier-system  
Chemically Resistant Polarimeter Tubes
Self-sealing coupling tubes
Triple Quartz Control Plates
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