Automatic Polarimeter, AUTOPOL® VI  For Analytical Laboratories

The AUTOPOL® VI Automatic Polarimeter was developed for the most demanding analytical laboratories. If your laboratory requires the highest accuracy and must meet the most stringent compliance standards, the Autopol® VI has the measurement, temperature control, communications, and data tracking capabilities your application requires.

Standard Features and Accessories

  • 0.0003 accuracy for low rotation samples of ±1° Arc
  • TempTrol™ — Electronic cooling & heating from 15°–35°C
  • Six Standard Wavelengths: 365nm, 405nm, 436nm, 546nm, 589nm, 633nm
  • 21CFR Part 11 Compliance: Electronic Signature and secure local electronic data storage
  • 3-year domestic warranty and 20-year support guarantee
  • Standard Accessories: TempTrol™, NIST Traceable Quartz Standard, TempTrol™ 100mm Polarimeter Cell, TempTrol™ Temperature Validation Cell, Built-In Sample Measurement Probe, and 3 USB Ports.

Versatile Communication Capability

The AUTOPOL VI polarimeter’s standard communication package includes:

  • Ethernet port for Network Cable Connection
  • 3 USB ports
  • 2 RS 232 ports

Allowing the capability to:

  • Connect directly to Rudolph’s service department for remote testing and diagnostics via Internet connection.
  • Connect to any Windows® based printer via USB or direct to the server via Windows® Print Library
  • Save measurement data direct to your Network/Server

Automatic, Electronic Polarimeter Temperature Control System using TempTrol™

The USP <781> require optical rotation measurements at 25°C ± .5°C (unless another temperature is specified). The European Pharmacopoeia requires optical rotation measurements made at 25°C ± 5°C (unless another temperature is specified).

Whatever your temperature control needs are, the AUTOPOL® VI’s exclusive TempTrol™ System (Patent No. 2778542) makes your measurement in seconds without a waterbath or any type of water circulation.

The TempTrol™ System allows push-button temperature control of your 100mm cell, 200mm cell, or Quartz Plate. Set the temperature, push “measure” and walk away. The AUTOPOL® VI will heat or cool to a predefined temperature and then provide you with the result all in one easy step.

Patented TempTrol™ Technology Eliminates the Need for a Water Bath. Here is How the TempTrol System Works:


TempTrol™ heating and cooling transfer surface in the polarimeter sample chamber


TempTrol™ cell is placed in the sample chamber with mating heating & cooling transfer surface, manufactured with acid resistance materials: Hastelloy™ and Peek™.


Temperature is selected via touch screen. Temperature selection of 20°C shown left.


Place the TempTrol™ cell in your TempTrol™ equipped Autopol® polarimeter sample chamber to measure within ±0.2°C of the USP, EP, JP, or BP specified temperature (normally 20°C or 25°C ±0.5°C)


Rudolph provides a temperature validation cell with every polarimeter TempTrol™ system. The temperature validation cell along with optional NIST traceable thermometer is designed to validate the temperature control performance of the polarimeter and cell to ±0.2°C.

cGMP/GLP Printing

Measurement reports can be saved as an Excel or PDF file and edited quickly and easily. You can import logos and print your company’s customized “C of A” directly directly from the Autopol® VI Polarimeter.

Polarimeter Screed


Validation and Calibration

Rudolph Research Analytical knows that you must be able to validate your polarimeter’s operating performance regularly. Therefore, the AUTOPOL® VI comes standard with the accessories, validation tool and automatic calibration functions necessary to ensure that the temperature control, temperature measurement and optical measurement processes are working accurately and reproducibly. All functions are assessed simply and conveniently through the AUTOPOL® VI liquid sealed touch screen.

Unmatched Accuracy

For Racemic Solutions and very low concentration samples, the AUTOPOL® VI provides unmatched 4th decimal Optical Rotation accuracy of ±0.0003°Arc over ±1°Arc. Instrument performance for readings between -1 and 1° Arc is: Resolution ±0.0001, Reproducibility ± 0.0002, and Accuracy ±0.0003.

Polarimeter Screen 2

Intuitive Windows® Embedded Interface

  • 32 gigabytes of internal memory allow almost unlimited capacity for saving measurement data. The AUTOPOL®VI is network ready and data may also be saved directly to your server or to any directory desired.
  • Internet access is possible directly from the AUTOPOL® VI’s touch screen. This feature allows real time contact with Rudolph Research Analytical’s Service and Technical Support Team who can access your instrument remotely to assist in Window navigation, method setup and troubleshooting.
  • Windows based navigation architecture is so intuitive that most operators will never read the manual. But should you wish to reference the manual, it is stored right on the AUTOPOL VI’s internal memory.
  • Three USB ports allow quick and easy connection to a mouse, keyboard, printer, bar code scanner, or memory stick. One USB port is located on the front of the unit and two USB ports are located on the back of the unit.

Flexible Method Management

Install your own measurement methods for immediate selection of the correct method to match your most common tests. Setting up your own custom methods is as simple as filling out a few screens like the one shown to the right.

Full 21CFR Part 11 Instrument Level Compliance

The AUTOPOL VI’s 21CFR Part 11 software module is easily enabled through the user friendly touch screen. This module gives you full compliance with:

  • Electronic signature
  • Access levels
  • Internal write protected storage
  • Unique passwords
  • Write protected documents sent directly to server
  • Audit trail

Acid Resistance

The AUTOPOL® VI polarimeter comes standard with Rudolph’s Hastelloy™ upgrade option. This option includes a Hastelloy™ cell and Silco Steel™ cell chamber for increased resistance to acids like 6 Molar HCl.


Rudolph Research Analytical — still protecting your investment after 30 years

Today our Service Technicians have access to state of the art diagnostic tools and have a depth of knowledge that often lets them solve problems right over the phone. Our customers really appreciate the same day phone call by a real technical service person who wants to solve their problem. Our customers know that they can expect this support for many years to come as Rudolph is still repairing instruments which were built in the 70’s.


All Rudolph Instruments carry our exclusive 20 Commitment to service your instrument.

Rudolph Research Analytical offers a comprehensive range of Preventive Maintenance and Service Programs. Rudolph has demonstrated a commitment to its customers by keeping installed instruments operational, not only for 20 years, but in some cases for over 40 years. This long-term commitment to keeping our instruments running makes the cost of ownership, over the life of a Rudolph Instrument, one of the lowest in the laboratory market segment. At the date this document was published, there is no other laboratory instrument manufacturer guaranteeing service and technical support for 20 years. View the entire 20 Service Guarantee. 

Autopol VI – Specifications

Measuring Mode

Optical Rotation
Specific Rotation
Specific Rotation Plus Concentration
User Defined Scale
Sugar Degrees

Measuring Scale

Degrees Arc, % Concentration

Measuring Range

± 89° Arc Optical Rotation
± 999.99° Arc Specific Rotation
0-99.9% Concentration


0.0001° Arc Optical Rotation
0.0001% Concentration
0.0001° Specific Rotation


0.0002° Arc


See TB 926


Glan Thomson calcite quartz

Optical Wavelengths

365nm, 405nm, 436nm, 546nm, 589nm, 633nm
(other wavelengths available)

Wavelength Selection

Touch Screen Selectable: 6 Standard

TempTrol™ Range

Automatic Electronic Heating & Cooling 15°-35°C

TempTrol™ Accuracy

± 0.2°C

Temp. Probe Range


Temp. Probe Accuracy

± 0.1°C

Measurement Time

4°/sec slewing rate & 5 sec nominal settling time

Light Source

Tungsten-halogen 6V, 20W, avg. 2,000 hr life

Sample Chamber

Accepts sample tubes up to 200mm

Data Storage

32 GB Non-removable Compact Flash

Communication Interface

3 USB Ports, 2 RS232 Ports, Ethernet Port for Network Connection


Automatic calibration via touch screeen

Operating System

Windows® Embedded


10.4 inch diagonal, 800x600 pixels, color, Flat Panel Monitor with Resistance Touch Screen Interface, 200 nits brightness, gasketted for spill protection

User Interface


Automatic Sensitivity Control

Measures samples with transmittance as low as 0.01% (up to O.D. 4.0)

Input Power

85-260 VAC; 48-62 Hz,
150-200 Watts consumption

Operating Dimensions

32"W x 11.5"H x 19.5"D
813mm W x 292mm H x 457mm D

Shipping Dimensions

43"W x 28"H x 23"D
1411mm W x 919mm H x 722mm D

Operating Weight

90 lbs (41 kg)

Shipping Weight

140 lbs (64 kg)