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DigiPol, Automatic Polarimeters :
have long been used for some of the most demanding Optical Rotation measurements in Pharmaceutical & Chemical testing, Quality Control, Starch & Sugar estimation in Foods & Beverages determination of Sugar content Characterization of New chiral compounds in Chemical Research. |
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| DigiPol-781 Systems can be equipped for
almost any requirement with its wide choice of Light Sources and Optics. Automatic Wavelength Change guarantees smooth and efficient changeover from the normal 589 nm through 577, 546, 436, 405, 365 to 325 nm.
The DigiPol-DP781 Polarimeter meets the challenge of increased accuracy, convenience and compliance in today's regulatory environment. Programmable by a few keystrokes, for measurement and calculation all the pertinent information is displayed.
- Alphanumeric Identification needed for cGLP
- Automatic Averaging & Statistics
- Automatic Calculation of Specific Rotation / Concentration
- Correction for Moisture & Temperature
- Automatic Calibration, Upper/Lower Limit setting & Out of Ltd flags for Q.C., etc.
- Storage of up to 10 pre-programmed methods
- Printer (non fading ink), PC Interface
- Temperature measurement and correction
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| All DigiPol Polarimeters are modular systems and can be configured to meet a wide
range of application requirements |
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Configuration |
Installed
Source (s) |
Installed Filter(S)
wavelength, nm |
Installed
optics |
Wavelength
Change |
| Standard Configurations with single source and filter. Operation at other wavelengths by interchangeable filters and light sources |
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DP781-TDV |
Tungsten |
589 nm
Sodium 'D' line |
450 - 650 nm
Glan Thompson Polarizer |
Manual Filter
Change |
| DP781-SDV |
Arc Lamp |
| Standard Configurations with multiple sources and / or filters. Automatic Selection of up to eight wavelengths |
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DP781-M6U |
MUV Lamp |
589, 546, 436, 405,
365 & 325 |
325-650nm UV/VIS
Glan Taylor Polarizer |
Automatic |
| DigiPol-DP781 Automatic Polarimeters are designed on a modular basis and can be produced
in any combination of wavelengths to meet each individual customer application |
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| Specifications of the DigiPol-DP781 Range, common to all configurations: |
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Principle |
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Built-in Microprocessor Controlled Optical Null Seeking |
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Optical Density &
Sample Transmission |
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Can measure Samples with Optical Density of 3,
corresponding to Sample Transmission of 0.1 % |
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Rotation Range, &. Units |
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± 90° Arc, + 230° S (ISS) or , ± 230° Z (ISS), Selectable |
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Accuracy |
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+0.001°for the entire range |
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Readout Resolution |
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5,6 or 7 Digits with sign: 0.01°/ 0.001°/ 0.0005°, Keypad
selectable |
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Sample Cell Length |
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Up to 220 mm max. for the highest possible accuracy in measurement |
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Sample Cell
Compatibility |
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DigiPol is compatible with a wide range of cells with the industry standard of 30 mm dia., and also the larger 48 mm dia., provided by other manufacturers. |
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Display |
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4 line x 20 character LCD, Please see below for displayed parameters |
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Measurement programs |
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Up to ten programs can be stored (please see below) and retrieved by a keystroke later |
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Printer, Built in |
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Dot Matrix, Permanent ink, 24 characters per line |
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PC Interface, Built in |
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RS232, baud rate 9600/ 19200, 9 pin Female D sub connector |
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Timed Measurements |
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Interval: 0.2 to 60 min. selectable, Duration: 1 to 6,000 minutes selectable |
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Operating Controls |
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Power On/Off, and 6 x 4 keypad for all operations |
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Zero Setting |
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Auto zero on power on, Blank cell can be zeroed any time |
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Lamp Power Supply |
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Built in for Tungsten Lamp units, External plug in supply for Arc Lamp sources |
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Power Requirement |
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110V/60 Hz, 4 Amp or 220V/50 Hz, 2 Amp |
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Dimensions &. Weight |
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25"(W) x 12"(D) x 10"(H), 635 (W) x 300 (D) x 250 (H) mm,
45 lb. / 22 kg |
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| Display, Printout and Program features, common to all the configurations : |
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| DigiPol-DP781 can be programmed for measurement/ calculation & display/ print out/ transmittal to PC of any or all of the various parameters below.. Up to ten such sets of parameters appropriate for various tests can be stored as Programs (with alphanumeric names) and retrieved later instantly. |
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I. D., Alphanumeric |
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Company/ Lab., Eqpmt. Model No., Serial No. & Sample ID |
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Record keeping |
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Date & Time |
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Measurement Conditions |
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Cell length, Wavelength, Temperature (Optional) of Cell & Sample Compartment |
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Measurement Display |
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Observed Rotation |
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Calculation |
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Specific Rotation / Concentration |
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Corrections |
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for Moisture and Temperature |
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Minimum Readable angle |
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0.01/0.001°/ 0.0005°, selectable from key pad |
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Automatic Averaging |
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Up to twenty measurements, with display of measurements & average, |
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Statistics |
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CVP or STD, Min./ Max. values measured - available when averaging is selected |
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Q. C. Information |
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Upper & Lower Limits setup, Out of limit flags |
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Print Mode |
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Automatic, or on Key Command |
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Diagnostics (Display only) |
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PMT high voltage, Photometer signal range, Signal intensity and Motor step size |
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Contact us for additional information or custom specifications
We work to provide instrumentation to meet all your application needs |
| DESIGNED AND BUILT WITH EXPERIENCE - FOUR DECADES OF POLARIMETER TECHNOLOGY |
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