Bellingham + Stanley ADP450 / ADP430 Polarimeters

The ADP400 Series (ADP450 and ADP430) from Bellingham + Stanley are single wavelength polarimeters suitable for sugar, food, chemical and pharmaceutical industries. These polarimeters are available with or without XPC - Xylem's patented internal Peltier temperature control system. Both models use standard polarimeter tubes with a maximum length of 200mm. For fast performance in the Peltier controlled version, stainless steel tubes should be used. Low volume samples are also catered for with the addition of stainless steel, luer taper tubes.

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  • Specifications
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Proven LED optics

The ADP450 and ADP430 polarimeters contain proven LED optics, pioneered by Bellingham + Stanley, featuring 'no maintenance' yellow LED and interference filter. Combined with a photodiode detector these technologies allow for the reading of samples of up to 3.0 OD at the commonly used sodium (589nm) wavelength.

Both instruments feature angular and sugar scales (ISS) and can be programmed with user scales as well as industry standard methods for displaying invert sugar, inversion (A-B) or when applying other factors such as tube length and concentration, Specific Rotation (or concentration when entering specific rotation). This flexibility makes them ideal for use within laboratories where compliance with Pharmacopoeia is required.

3 decimal place precision for reliable results

ADP400 Series polarimeters have a resolution of 0.001 angular degrees (°A) and are capable of reading to an accuracy of ±0.010 °A with reproducibility up to 0.002 °A when working in controlled conditions.

An easy-to-use Methods system gives convenient access to popular measurement types including continual measurement of Optical Rotation, Specific Rotation, Concentration, Inversion, or a new "single-shot" measurement which gives a snapshot result at any given time.

ADP450 Polarimeter with Peltier temperature control

The ADP450 polarimeter with patented XPC technology features interchangeable contact Peltier plates facilitating measurement at a stable temperature using Peltier control. This stabilises the temperature of the sample being measured, making for easy readings in the laboratory.

SMART temperature stability ensures accurate reading for pharmaceutical applications. The PHR-MEAN Method allows a number of different readings to be taken from a batch of samples and the statistical report, showing the average, high and low results together with standard deviation can then be printed or stored to file.

With SMART temperature stability enabled, the ADP450 will only give a result when the instrument has displayed a stable temperature over a predetermined timeframe.

ADP430 Polarimeter without internal temperature control

For those looking for a fully featured polarimeter without the need for internal temperature control, the ADP430 polarimeter comes complete with all the features of the ADP450 minus our new XPC Technology.

The ADP430 is ideal for users who prefer or already have waterbaths for temperature control or where temperature compensation or stability is not required.

Specifications Angular ISS (°Z)
Range -355 to + 355 selectable -225 to +225
Resolution 0.01/0.001 0.01/0.001
Reproducibility 0.002 0.005
Accuracy ±0.010 ±0.030

Methods Specific Rotation, Purity, % Concentration, % Invert Sugar, % inversion
Light Source LED/Interference filter (589nm)
Beam Diameter 4 mm
Tube Length 10 to 200 mm
Reading Time Continuous measurement & display or 'Single shot' (selectable)
Temperature control ADP450: XPC Peltier control / ADP430: None / user external
Temperature Compensation None, sugar, quartz, user defined
Measuring Range ADP450: 15-35°C  /  ADP430: 5-40°C
Optical Density Range 0.0 to 3.0 OD
Power Supply


Instrument: 24v DC, ±5%, <2A

External PSU: 100-240V, 50-60 Hz. Supplied with instrument