ADP400 series single wavelength polarimeters

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Single wavelength polarimeters with low maintenance LED light source. Available with or without Peltier temperature control.

The ADP400 Series are general-purpose single wavelength polarimeters suitable for sugar, food, chemical and pharmaceutical industries. The ADP400 polarimeters are available with or without XPC – Xylem’s patented internal Peltier temperature control system. Both models use standard ICUMSA polarimeter tubes with a maximum length of 200 mm.

ADP400 series polarimeters contain proven 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 (589 nm) 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.

ADP400 Series polarimeters have a resolution of 0.001 angular degrees (°A) and are capable of reading to an accuracy of ± 0.010 °A. When working under laboratory controlled conditions, ADP400 polarimeters also offer excellent reproducibility of up to 0.002 °A.

You can take readings with the ADP400 Series polarimeter in either continuous measurement or our new ‘single-shot’ mode. In continuous mode a reading is taken over a set period of time and a stabilised result displayed at the end of the period. It is excellent for monitoring instrument and sample stability.

The ADP400 Series’ new ‘single-shot’ mode is ideal for pharmaceutical applications where a discrete value is provided without the interpretation of the operator, satisfying operating procedures where interpretation by a third-party, the operator, is not permitted.

Calibration and configuration of the instruments can be password protected, accessible by keypad entry or, for convenience, using a fully configurable RFID tag.  This, together with the audit trail, facilitates operation in environments conforming to FDA regulation 21 CFR Part 11 or GLP.

ADP450 Peltier Temperature controlled polarimeter with patented XPC technology

  • 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.

ADP430 digital polarimeter for use with waterbaths, ATC or where no temperature control is required

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


General specifications


ADP450  (Peltier)



Angular Degrees (°A)

-355 to +355

International Sugar Scale (°Z)

-225 to +225


Angular Degrees (°A)

0.01/0.001 (selectable)

International Sugar Scale (°Z)

0.01/0.001 (selectable)


Angular Degrees (°A)

± 0.010

International Sugar Scale (°Z)

± 0.030

User Scales/Methods


Tube Length

10 to 200 mm

Optical Density

0.0 to 3.0 OD


None, ICUMSA, quartz or user defined

Measuring Range

5-40 °C

15-35 °C

Sensor Accuracy

± 0.1 °C


Waterbath dependent

± 0.2 °C