AUTOPOL III Polarimeter

Autopol III would also have two wavelengths - 546 & 589 nm.  The resolution is 0.001 Deg Arc and the accuracy is 0.002 Deg Arc.  With the "AP" (Advanced Precision) option the accuracy would be +/- 0.0024 Deg Arc.  upto 1 Deg Arc and 0.2% above 1 Deg Arc.

The AUTOPOL III Automatic Polarimeter is Rudolph's entry level Dual Wavelength Pharmaceutical and Research grade polarimeter offering accuracy similar to Rudolph's more advanced models, but with a simplified interface. Just place your cell in the sample chamber, press the large red Measure Key and get 5 results in less than 25 seconds. It's that easy.

The Autopol III's Temperature Probe is covered with a micron thick glass coating to stand up to high molar Hydrochloric Acids used by some pharmaceutical labs.


A cGLP/GMP compliant printout, which includes the temperature of the sample is generated by pressing the Print/Send Key after the measurement is finished.

Accessory Packages

The Autopol III comes standard with one of the three different Accessory Packages shown below. Each Package includes a NIST Traceable Calibration Standard and Certificate, two Tungsten Halogen Lightsource lamps and an alignment target, but different cell configurations. You select the package that is right for your lab.


Accessory Package Aincludes one 100mm, 6ml glass center fill cell and one 100mm, 6ml glass center fill stainless steel jacketed cell. This is our most popular package, as cell windows can be removed and cleaned to avoid sample residue build up. All cells in this package are compatible with acids.


Accessory Package B includes one 50mm glass jacketed fixed end cell and one 100mm glass center fill cell with removable windows. Fused end cells avoid improper assembly by untrained users, but are very fragile and difficult to clean. All cells in this package are compatible with acids


Accessory Package C is designed for small volume and durability and is very popular with universities. Each cell has a lifetime warranty against breakage, is easily filled and cell windows can be removed, cleaned and replaced if necessary. Cells are available in 50mm, 100mm and 200mm length versions. Cell volumes range from 0.5ml to 15ml.


AUTOPOL III Specifications

Measuring Mode Optical Rotation
Specific Rotation
°Z (ISS) Sugar Degrees
Measuring Scale Degrees Arc Optical Rotation
Measuring Range ±89° Arc Optical Rotation
Reproducibility 0.002° Arc Optical Rotation
Resolution 0.001° Arc Optical Rotation
Standard Model Specs Accuracy: 0.002° Arc up to 1°, 0.2% above 1°
AP Model Specs Accuracy: ±0.002° up to 10°, ±0.004° 10° and above (Arc Optical Rotation)
Prism Glan Thompson Calcite
Optical Wavelengths 589nm
Temp. Control Range Available on Autopol V only
Temp. Control Accuracy Available on Autopol V only
Temp. Probe Measurement Range 10° - 40°C
Temp. Probe Measurement Accuracy ±0.1°C
Measurement Time 5 measurements in less than 25 seconds (avg.)
Light Source Tungsten-halogen 6V, 20W, avg. 2,000 hour life
Sample Chamber Accepts sample tubes up to 200mm
Data Storage Available on Autopol V only
Communication Interface Two RS232 serial ports, one parallel printer port
Analog Output 0.1% resolution 0-10 volt full range (optional)
Calibration Automatic calibration via touch screen
Display 7.5cm x 10cm Graphics LCD, 320 x 240 dots cold fluorescent back lit
User Interface Touchscreen
Automatic Sensitivity Control Measures samples with transmittance as low as 0.01% (up to OD 0.04)
Input Power 100 - 240V, 50/60Hz
Operation Dimensions 24.3"W x 12.7"H x 17.5"D
617mm W x 323mm H x 445mm D
Shipping Dimensions 36"W x 19"H x 21"D
923mm W x 487mm H x 538mm D
Operating Weight 42 lbs. (19.05 kg)
Shipping Weight 72 lbs. (32.6 kg)
Calendar/Clock Functions Battery-backed clock; time and date sent to computer and printer
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