Polarimeters without temperature control

P8000 and P8100

Polarimeter P8000 with measurement tube PRG-100-E and temperature sensor PRT-E

Polarimeter P8000 with measurement tube PRG-100-E and temperature sensor PRT-E

Quartz control plates polarimeter PQP

Quartz control plates polarimeter PQP

Polarimeter stainless steel tubes PRM-100-D

Polarimeter stainless steel tubes PRM-100-D

Polarimeter glass tube PRG-200-E

Polarimeter glass tube PRG-200-E

Polarimeter glass gauge PRG-100-E

Polarimeter glass gauge PRG-100-E

Key features
Applications
Standards
Samples
Key features

Compact polarimeter with proven features

The polarimeter models P8000 and P8100 are the right choice for all applications where sample temperature control for high-precision measurements is not absolutely necessary. The devices are suitable for nearly all samples as the parts that come in contact with the sample are chemical resistant. The P8000 and P8100 are recommended for all basic applications. Instead of a temperature control, the temperature can be compensated according to ICUMSA. That allows you to take measurements at any temperature; the results will then be converted to the desired temperature. In addition, the international sugar scale has been predefined on our devices, and the initial weight is taken into account for the conversion into the specific rotation.

  • Suitable tubes for any type of sample
  • Temperature measurement directly inside the sample
  • Reliable temperature compensation
  • Highest accuracy over the entire measurement range
  • Very short measurement time of approx. 1 s
  • Measurement up to an optical density of 3.0
  • Intuitive operation via touch-screen display
  • Predefined scales (opt. rotation, spec. rotation, int. sugar scale, concentration)
  • Any number of freely definable scales with conversions based on tables or formulas
  • Chemical-resistant materials
  • Compliance with GMP/GLP, 21 CFR Part 11, Pharmakopöen (USP, BP, JP, Ph. Eur.), FDA, ISO, HACCP, OIML, ASTM, ICUMSA, NIST
Applications

Typical applications

The P8000 and P8100 are especially recommended in case of a high sample throughput in the sugar industry.

  • Determination of concentrations in raw materials, preliminary, intermediate and end products
  • Determination of sugar concentration
  • Monitoring of chemical processes, e.g. during the manufacture of invert sugar

A comprehensive overview of typical applications with the polarimeters of the P8000 series can be found in our campus article on polarimeter applications.

Standards

Conformity with national and international standards

A big advantage of normalized measurements is the comparability of the measurement results. In many international standards and guidelines, polarimeters are recommended for specific measurement tasks as suitable measuring instruments. The requirements for the measuring devices, such as measuring accuracy and measuring temperature, are dependent on the respective measuring task and defined in each standard. We have compiled for you an overview of all known standards and guidelines, which refer to polarimetry.

  • Association of Analytical Communities (AOAC)
  • American Society for Testing and Materials (ASTM)
  • European Honey Commission (EHC)
  • International Commission for Uniform Methods of Sugar Analysis (ICUMSA)
  • European Pharmacopoeia (Ph. Eur.)
  • United States Pharmacopoeia (USP)

Polarimeter Standards (PDF, 110 KB)

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Feel free to contact us, we will assist you in choosing the right polarimeter for you.

Samples

Measuring optically active substances

Many biologically important substances such as amino acids, sugars, enzymes or receptors are chiral compounds and have the ability to rotate linear-polarized light. Almost all natural amino acids rotate linearly polarized light to the left, whereas natural sugars (eg D-glucose) almost exclusively turn right. These substances have the same physical properties as density, melting point, boiling point or IR spectrum except for their optical activity. Depending on the direction of rotation, chiral substances can have very different physiological effects on living organisms. Therefore, measurement of optical purity with a polarimeter is an important quality criterion in the production of chiral drugs in the pharmaceutical industry. Due to the proportionality of the rotation value α and the concentration c, it is possible to carry out quantitative content determination of sugar solutions in the sugar processing industry (saccharimetry).

A high-quality optics, intelligent evaluation logarithms, LEDs with different wavelengths and a consistent measuring accuracy over the entire measuring range are available for the quantification and characterization of all optically active substances.

In the following table we have compiled an overview of frequent samples from our customers. Most samples were measured at standard measurement conditions (20 ° C, λ = 589 nm). Deviations are indicated. The measurements given are not specifications.

Polarimeter samples and their optical rotation (PDF, 138 KB)

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Get in contact with us, we will assist you in choosing a suitable polarimeter.

Model specifications

 P8000P8100
SCALESOptical rotation [°]
Int. sugar scale [°Z]
Concentration [g/100 ml]
Spec. rotation
User-defined
MEASUREMENT RANGES±90°
±259 °Z
0–99.9 g/100 ml
ACCURACY±0.003°
±0.01 °Z
±0.5 g/100 ml
±0.002°
±0.01 °Z
±0.5 g/100 ml
RESOLUTION0.001°
0.01 °Z
0.1 g/100 ml
TEMPERATURE
TEMPERATURE MEASUREMENTWith temperature probe PRT-E or PRT-T
TEMPERATURE MEASUREMENT RANGE0–99.9 °C
TEMPERATURE MEASUREMENT RESOLUTION0.1 °C
TEMPERATURE MEASUREMENT ACCURACY±0.2 °C
TEMPERATURE CONTROLCan be retrofitted (requires water bath thermostat PT31 or PT80
sample chamber bushing P8020 and temperature-controlled measurement tube PRG-100-ET)
OTHER SPECIFICATIONS
MEASUREMENT PERIOD ±90°Approx. 1 s
LIGHT SOURCE1 LED with filter
WAVELENGTH589 nm

Technical data polarimeter (PDF, 1000 KB)

A strong performance package

The A.KRÜSS polarimeters are the fastest in the world thanks to the patented measuring method. They achieve high measuring accuracies, have an intuitive user interface, complete measured value documentation and compliance with global standards. Thanks to the many functionalities, the P8000 models are a worthwhile investment

 

Intuitive operation

  • State-of-the-art touch-screen display
  • Uniform operation of all A.KRÜSS laboratory devices
  • Secondary scale for displaying a second measured value
  • Freely assignable shortcut keys for the most important functions
  • Easy, menu-driven adjustment
  • A selection of six languages (de, en, es, fr, it, pt)
 

Fast reliable measurement

  • Measurement up to an optical density of 3.0
  • Very short measurement time of approx. 1 s – the fastest polarimeters in the world!
  • Measurement with manual measurement time input or optimised measurement time thanks to automatic stability recognition
  • Reliable temperature compensation
  • Highest accuracy over the entire measurement range
 

Easy filling and cleaning

  • Suitable tubes for any type of sample
  • Manual, semi-automatic or fully automatic sample supply
  • Chemical-resistant materials
  • Freely configurable cleaning procedures
  • Semi-automatic or fully automatic drying
 

Unlimited number of methods

  • Create any number of methods and analyse each sample using the desired parameters
  • Method parameters: scales, temperature, temperature compensation, sample supply, wavelength, tube length, limit values, comment and many more
  • Measurement modes: single, continuous or interval measurement
  • Predefined scales for optical rotation, specific rotation, sugar content and concentration
  • Any number of freely definable scales with conversions based on tables or formulas
 

Inteligent unser administration

  • Can be activated or deactivated depending on the requirements
  • Two authorisation levels
  • Optional setup of user profiles
  • Customised settings for different users or work groups
 

Complete documentation of measured values

  • Complete recording of all measured data as well as system and method settings in a tamper-proof data storage
  • Documentation of all measured values of the last 999 measurements with consecutive numbering
 

Flexible data export

  • Print-out on serial ASCII printer
  • Print-out on network printer in PDF or GS format
  • Print-out as PDF on USB flash drive or to network share
  • Export in HTML or CSV format on USB flash drive or to network share
  • Can be connected to a keyboard, mouse, barcode scanner or external PC in order to use the KrüssLab software
  • Easy integration into existing networks (DHCP Client) or a LIMS
 

Polarimeter solutions for any need

  • P8000/P8100 without temperature control
  • P8000-T/P8100-T with water bath temperature control
  • P8000-P/P8100-P with Peltier temperature control
  • P8000-TF/P8100-TF with water bath temperature control and flow-through function
 

Compliance with global standards

  • GMP/GLP
  • 21 CFR Part 11
  • Pharmacopoeias (USP, BP, JP, Ph. Eur.)
  • FDA, ISO, HACCP, OIML, ASTM, ICUMSA, NIST
 

PRM-100-D aus Edelstahl

Für besonders schnelle komfortable Probenzufuhr empfiehlt sich die Durchfluss-Edelstahlröhre mit Einfülltrichter und Überlaufrohr mit 100 mm Länge und 12 ml Fassungsvolumen.

Mehr zu den PRM-Edelstahl-Messröhren
 

Polarimeter applications

The angle of rotation allows you to ascertain the identity and quality of substances as well as their concentration in mix tures. It can also indicate the progress of reactions and conversions. Polarimeters are used in a wide range of applications – from the determination of the purity and concentration of ngredients in pharmaceuticals to the maturity testing of agri cultural products to the measurement of the sugar con tent in beverages and candies.

Typical applications of polarimeters
 

What is a polarimeter?

Polarimetry will provide information about the molecular structure, the concentration of the substance and sometimes information about the solvent used. The optical activity is also influenced by temperature, the wavelength of the light, and the length of the optical path - the longer the path of the light through an optically active substance, the larger the angle of rotation. These variables may be used to control the sensitivity of the instrument.

How does a polarimeter actually work?
 

Automation with polarimeters

Maximum efficiency and increased time savings through automation options - with our polarimeters P8000-TF and P8100-TF with their temperature-controllable measuring tubes, the entire measuring process can be carried out semi-automatically or fully automatically and without manual intervention, from sample supply to cleaning to drying.

More about automation
 

Our service is unbeatable

As a customer you are at the center of our service, and for your satisfaction we give our best every day. Quality is always our top priority. Whether commissioning, calibration, maintenance or repair: with our certified service and repair services, you can rely on the first-class expertise of our specialists.

Our certified services
 

Application Consulting

We are happy to assist you with product and application questions - by telephone, on site or in our training center in Hamburg. Whether it's advice and support, quick problem solving through application experience, help with system automation and integration, questions about industry standards, our experts are there for you.

read more
 

Any Questions?

We will be glad to help.

+49 40 514 317-0

sales@kruess.com

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