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UniPol 2020
UniPol 2020 (Circle Polarimeter)
- High-performance circle polarimeter
- Unchanged high precision
- 21 CFR part 11 ready
- Comply to international standards
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 practise 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 polarimeter Unipol 2020 is 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.
The resolution of Unipol 2020 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: Chemically resistant polarimeter tubes
- NEW: Polarimeter tubes with self-sealing coupling for quick and safe connection/disconnection of water circulators
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 precision 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.
Main specifications
| Measurement scale | °Optical Rotation / °Specific Rotation / °Z International Sugar Scale / % Concentration / freely definable scales |
| Measuring range | ± 360° / ± 259°Z |
| Resolution | 0,001° / 0,01°Z |
| Precision | ±0,005° / ±0,02°Z |
| Reproducibility | 0,005° / 0,02°Z |
| Sensitivity | up to OD 2 |
| Response time | approx. 6 - 8 sec |
| Wavelength | one fixed (589 nm), others on request |
| Measurement mode | discontinuous |
Temperature
| Temperature measurement | If temperature sensor with appropriate tubes is used |
| Temperature control sample | with appropriate tubes via external water bath |
| Temperature control range | depends on the water bath |
| Resolution | depends on the water bath |
| Precision | depends on the water bath |
| Reproducibility | depends on the water bath |
Additional information
| Measuring tubes | up to 200 mm length |
| Ambient temperature | +10 - +40 °C |
| Light source | LED |
| Display | Graphics-LCD 16 x 16 characters |
| Operation | Alpha numerical keyboard, 20 buttons inclusive function keys |
| Interfaces/communication | 2 serial RS-232, 1 parallel, USB* und Ethernet* |
Conformity
| Standards*** | International Pharmacopoea, ASTM, ICUMSA and others |
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