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Schmidt + Haensch | Polarimeters




Polarimetry – optical activities

Classical physics teaches that light consists of electromagnetic waves, which vibrations are transverse to the direction of propagation. Polarized light is light, which vibration pattern exhibits preference. If natural light passes through a so called polarizing filter, most of its other vibrating directions will be filtered out, leaving only one specific direction. If this light is oscillating then in only one direction, it is called “linearly polarized”.

There is a great number of organic and inorganic substances being optically active in their crystalline, liquid or dissolved state. That means, these substances are able to rotate the direction of oscillation of polarized light around a determined angle. The principle of the polarimeter is accomplished if a dissolved optically active substance is introduced between two polarizing filters, crossed at 90°. The intensity of the light on the detector behind the second polarizing filter varies as a function of the angular position of these two filters.

Optical rotation in general means that the polarization of the direction of light will be rotated for a certain angle when penetrating an optically active substance. A simple polarimeter contains at least the following parts:

Polarimeter
At point zero, polarizer and analyzer are set in an angle of 90° towards each other, which means that no light reaches the detector (0% transmission). As soon as an optically active substance is introduced into the sample room, the transmission will be rising in consequence of the plane of polarization. To measure the angle of the rotation, the analyzer is rotated up to a point where the transmission of the detector is again at a minimum. Optical rotation is measured in degrees of angle; this kind of instruments are thus called circle polarimeters.

In order to determine the exact compensation position, SCHMIDT + HAENSCH uses faraday modulation as an electronic enhancement. Without mechanical transmission by a V-belt or gear being necessary, we apply a direct coupling of optical encoder and analyzer in all measuring instruments.

That is how a high accuracy throughout the entire measuring range is achieved. Additionally, these principles guarantee for short measuring times and no mechanic wear. Consequently, highest sensitivity and fastest compensation time over the entire measuring range is archieved. The continuous measurement is also allowing monitoring of muto-rotation.


Polartronic

Schmidt & Haensch | Polartronic N Touch

The fully automatic All-rounder amongst Polarimeter with continuous measurement
Polarimeter of the N-Series are high resolution polarimeters with following features:

  • High-performance Polarimeter for different applications
  • Robust metal housing
  • Highly accurate and reproducible measuring results over the whole measuring range in no time at all
  • Continuous measurements for control of changes in concentration, depending on time or reaction
  • Adopted User friendly Operation System displayed by a broad 7“ TFT Touchscreen
  • Easy to calibrate by certified Quartz Control Plates (SQCP, TQCP)
  • Modern and robust design for rough environments
  • Internal measuring data storage
  • Documentation according to GLP/GMP, 21 CFR part 11 ready, corresponding software optionally available
  • Very long-lasting LED light source
  • Extremely low noise
  • Minimal maintenance effort
  • Remote diagnostics and servicing
  • 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.

    In conjunction with the Schmidt & Haensch Software AQUISYS 2008 all requirements of 21 CFR Part 11 will be performed.

  • Audit Trail function (history logging)
  • Report generation
  • Electronic signature
  • Encrypted electronic data storage and archiving
  • Data transfer to Excel
  • Remote modus

  • Features of Polarimeter N Touch Series:
  • High-performance circle polarimeter
  • Maximum user-friendliness
  • Large 7” touch screen
  • Pre-installed user methods
  • Flexibility due to modular concept
  • Higher sensitivity than N series

  • View Brochure

    polarimeter

    Schmidt & Haensch | Polartronic N

    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.

    Features of Polarimeter N Series
  • High-performance circle polarimeter
  • Unchanged highest precision
  • Continuous measurement
  • For versatile applications
  • Highest quality “Made in Germany”

  • View Brochure

    polarimeter

    Schmidt & Haensch | Polartronic M Touch

    The fully automatic All-rounder amongst Polarimeter with continuous measurement

    Polarimeter of the M-Series are high resolution polarimeters with following features:

  • High-performance Polarimeter for different applications
  • Robust metal housing
  • Highly accurate and reproducible measuring results over the whole measuring range in no time at all
  • Continuous measurements for control of changes in concentration, depending on time or reaction
  • Adopted User friendly Operation System displayed by a broad 7“ TFT Touchscreen
  • Easy to calibrate by certified Quartz Control Plates (SQCP, TQCP)
  • Modern and robust design for rough environments
  • Internal measuring data storage
  • Documentation according to GLP/GMP, 21 CFR part 11 ready, corresponding software optionally available
  • Very long-lasting LED light source
  • Extremely low noise
  • Minimal maintenance effort

  • 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.

    In conjunction with the Schmidt & Haensch Software AQUISYS 2008 all requirements of 21 CFR Part 11 will be performed.
    AQUISYS 2008 software is 21 CFR Part 11 compliant for Schmidt & Haensch’s instruments.

  • Audit Trail function (history logging)
  • Report generation
  • Electronic signature
  • Encrypted electronic data storage and archiving
  • Data transfer to Excel
  • Remote mode

  • Features of Polartronic M Touch
  • High-performance circle polarimeter
  • Maximum user-friendliness
  • Large 7” touch screen
  • Pre-installed user methods
  • Flexibility due to modular concept
  • Higher reproducibility and sensitivity than M series

  • View Brochure

    polarimeter

    Schmidt & Haensch | Polartronic M

    Fully automatic circle polarimeter Polartronic M series
    The All-rounder amongst Polarimeter with continuous measurement, resolution ±0,001°
    Polarimeter of the M series are high resolution polarimeters 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 highest requirements in quality and research laboratories
  • 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 10 methods
  • 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 read just 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. In conjunction with the Schmidt & Haensch Software AQUISYS 2008 all requirements of 21 CFR Part 11 will be performed.
    AQUISYS 2008 software is 21 CFR Part 11 compliant for Schmidt & Haensch’s instruments.
  • Audit Trail function (history logging)
  • Report generation
  • Electronic signature
  • Encrypted electronic data storage and archiving
  • Data transfer to Excel
  • Remote modus
  • Features of Polartronic M series
  • High-performance circle polarimeter
  • Unchanged highest precision
  • Continuous measurement
  • For versatile applications
  • Highest quality “Made in German“

  • View Brochure

    polarimeter

    Schmidt & Haensch | Polartronic H 532

    NEW – High Resolution 0,0001° The new high resolution polarimeter H532 with up to 5 wavelengths and highest precision
    Spectral Multiple Wavelength Polarimeter
    Polartronic H532 is housed under the steel housing with large user programmable display and powerful software similar to the SCHMIDT + HAENSCH refractometer ATR series. The improved software implements amongst other features the input of sample identification numbers, statistic evaluations of multiple measurements, user definable printouts individually configurable for each of the 10 available methods, etc.

    Fully electronic high resolution circle polarimeter with the following characteristics:

  • Measurement of the optical activity of liquids according to ICUMSA, O.I.M.L. and Australian Standard K 157, European and American Pharmakopöe
  • For highest demands in pharmaceutical, research and development laboratories
  • Direct reading of the rotation angle without mechanical transmission is resulting in guaranteed unmatchable precision over the entire measuring range
  • Short measuring time, 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 10 methods
  • Calibration free due to spectral lamps
  • Display of the optical density
  • Analytical measurements at multiple wavelength (determination of the optical rotation dispersion)
  • Selectable apertures for standard cells and micro cells
  • The circle polarimeter is equipped with five wavelengths. The standard wavelength are 365.11 nm; 435.95 nm; 546.23 nm; 579.16 nm; 589,44 nm, others on
  • request
  • Serial to Ethernet converter for data transfer to PC
  • Automatic temperature compensation when using an appropriate polarimeter tube
  • 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
  • Internal data memory (999 measurements)
  • High quality “Made in Germany“, consultation and service at site possible
  • Polarimeter Accessories:
  • NEW: Chemically resistant polarimeter tubes
  • NEW: Polarimeter tubes with self-sealing coupling for quick and safe connection / disconnection of water circulators
  • NEW: Triple Quartz Control Plates (TQCP’s)

  • In conjunction with the SCHMIDT + HAENSCH Software AQUISYS 2008 all requirements of 21 CFR Part 11 will be performed.
    AQUISYS 2008 software is 21 CFR Part 11 compliant for Schmidt & Haensch’s instruments.
  • Audit trail function (history logging)
  • Report generation
  • Electronic signature
  • Encrypted electronic data storage and archiving
  • Data transfer to Excel
  • Remote modus
  • Features of Polartronic H 532
  • Highest precision
  • Meets highest demands
  • Up to 5 wavelengths
  • Calibration free due to spectral lamps
  • Maximum user friendliness

  • View Brochure
    polarimeter

    Schmidt & Haensch | Saccharomat Touch series

    Saccharomat – Worldwide unique quartz-wedge compensated sugar polarimeter
    The Saccharomat is a fully automatic working sugar polarimeter.
    Quartz has an optical rotatory dispersion (ORD) almost identical to that of a sucrose solution. This fact is exploited as a unique compensation mechanism using a quartz wedge in Schmidt & Haensch’s Saccharomat. This working principle is unique and is unrivalled today.
    As the quartz and the sample react in an identical way to small shifts of wavelength, these shifts are being automatically compensated and the effect becomes irrelevant. This ensures long time stable high precision measuring results without the necessity of recalibration over the lifetime of the instrument. Highly advantageous is that dark samples with a high absorption may be measured at NIR wavelength (882 nm) after carefully filtration (see filtration unit “AutoFilt Z”) without additional clarification being necessary.
    For the measurement of Pol and Brix values at the same time, the Saccharomat can be coupled directly with the refractometer measuring head creating a Purity Analyzer. This solution is very economical since there is no need for the additional electronic unit of the refractometer.

  • Fully electronic sugar polarimeter (saccharimeter) using the unique principle of quartz wedge compensation
  • Less wavelength dependency compared to circle polarimeters
  • Instrument does not need re-calibration at any time
  • Measurement of very dark samples after filtration with Autofilt Z without additional clarification at infrared wavelength (NIR)
  • Energy saving LED light source
  • High and stable accuracy of the instrument over the whole measuring range
  • High compensation speed
  • Indication of the optical density
  • Automatic temperature compensation if using appropriate polarimeter tubes
  • Polarimeter tubes with self-sealing coupling for quick and safe connection/disconnection of water circulators
  • Opens external link in new window Triple Quartz Control Plates (TQCP’s)
  • User-specific methods
  • Up to 1000 scales freely programmable
  • Continuous measurement
  • Adapted user friendly operation system displayed by a high resolution 7” TFT touch screen
  • Minimal maintenance effort
  • GLP/GMP conform documentation
  • High quality “Made in Germany”, consultation and service at site possible

  • Software Features
  • Menu-driven operation
  • Individual structuring of display and data output
  • Easy creation of user-specific measurement methods
  • Operational levels with password protection (user administration)
  • Freely programmable formulas
  • Data export towards MS Excel, as text file or PDF file
  • Convenient connection to LIMS systems
  • Easy reset of all adjustments to the delivery status of the instrument
  • Easy reset to company specific basic adjustments on administrator level
  • Extensive self-diagnostics and service level for easier maintenance and repair
  • Remote diagnostics and maintenance of data

  • Features of Saccharomat Touch series
  • Patented sugar polarimeter
  • Calibration free due to quartz wedge compensation
  • Extremely highly stable readings
  • Maximum user-friendliness
  • Combination with refractometer (Purity Analyzer)

  • View Brochure
    Unipol

    Schmidt & Haensch | Unipol L series

    Fully automatic digital polarimeter particularly designed for pharmaceutical and chemical applications. The entire measuring range of ± 360° is divided in several measuring ranges which can easy be selected by the menu. The user friendly menu structure of the instrument is easily operated with the splash-proof alphanumerical keyboard. Software design close to the practice enables the user to input sample ID-numbers, calculate statistical evaluation and configure user defined printout of the measuring results. The measuring values are shown on the large LCD display. The standard model is equipped with the 589 nm wavelength. Other wavelengths on request.
    Various polarimeter tubes are available for different applications. With the use of micro tubes smallest sample volumes are sufficient. The polarimeters Unipol L series are equipped with plug in connector for the temperature sensor of the SCHMIDT + HAENSCH 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. The resolution and precision of Unipol L 1000 and L 2000 polarimeters are higher than the standard model Unipol L. They meets all requirement of quality laboratories. Additional features are:

  • Automatic adjustment of beam diameter, necessary for the use of micro tubes
  • AWC (Automatic Wavelength Control) – automatic calibration routine
  • The resolution of all Unipol L models is in complete conformity to the European and American Pharmacopeia. GLP/GMP conform data can be transferred to printer or PC. In addition to 1 parallel and 2 serial interfaces these polarimeters are equipped with PS2 interface for connecting a barcode reader or keyboard.

    Polarimeter Accessories:
  • NEW: T-Cell polarimeter tubes with an integrated electronic Peltier-system for highly accurate sample temperature adjustment without the need for an external water circulator T-Cell polarimeter tubes with an integrated electronic Peltier-system
  • NEW: Chemically resistant polarimeter tubes
  • NEW: Polarimeter tubes with self-sealing coupling for quick and safe connection/disconnection of water circulators
  • NEW: Triple Quartz Control Plates (TQCP’s)
  • 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.
    In conjunction with the Schmidt & Haensch Software AQUISYS 2008 all requirements of CFR21 Part 11 will be performed. AQUISYS 2008 software is CFR21 Part 11 compliant for Schmidt & Haensch’s instruments.

  • Audit Trail function (history logging)
  • Report generation
  • Electronic signature
  • Encrypted electronic data storage and archiving
  • Data transfer to Excel
  • Applications
    Polarimetric concentration and purity analysis in food, pharmaceutical, cosmetic and chemical industry.
    Features of Unipol L series
  • High-performance circle polarimeter
  • Unchanged high precision
  • T-Cell “Peltier” tubes
  • Self calibration (AWC)
  • Comply to international standards

  • View Brochure
    Visual Circle

    Schmidt & Haensch | Visual Circle Polarimeter

    Small Universal Polarimeter NEW: Long-lasting LED illumination unit The Small Universal Polarimeter is a visual circle polarimeter suitable for school and education. The polarimeter has a circular scale of ±180° angular degrees divided into full degrees. Together with the Vernier scale rotations can be measured to an accuracy of 0.1° and with a little practice they can be estimated to an accuracy of 0.05°. There are three possible lighting units:

  • The LED unit is a very long lasting illumination unit (life time approx. 50.000 hours).
  • The halogen lamp is less expensive and has a longer life time than spectral lamp. LED as well as are ready for use immediately upon switching on.
  • The spectral lamp unit is recommended for higher absolute accuracy.

  • A sodium spectral lamp emits light of a defined wavelength (line spectrum). In order to block out undesired side spectral lines, colored glass filter should be used. It also must be inserted into the light admission opening.

    Features of Visual Circle Polarimeter
  • Rugged visual polarimeter
  • Three lighting units
  • Ideal for school/education

  • View Brochure

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