For sugar mills following the ICUMSA non-lead procedure but not requiring the precision of Rudolph’s higher-end models. Autopol IIZ has the same external physique as Autopol IZ but has 2 wavelengths instead of 1.
Autopol 589

Autopol 589 has better accuracy than Autopol IZ & IIZ but only has the 589 nm wavelength thus incompatible with ICUMSA testing at 880 nm. The 589 nm wavelength is intended for lead or other suitable clarifier applications.
- Wavelengths: 589nm
- Accuracy: 0.01°Z
- Measurement Range: ±259°Z, ±89.99°Arc
- Temperature control is optional (Only suitable for modern, air-conditioned laboratories)
- Temperature Correction: 20°C, 27.5°C or user-defined
Autopol 880/880T
This is Rudolph’s most widely used saccharimeter, employed by 98% of US sugar mills, 100% of US customs labs, and thousands of sugar mills worldwide. The difference between 880 and 880T is only on the temperature control feature. 880T comes standard with it. This model also comes in 2 or 4 wavelength versions.
- Standards Wavelengths: 589nm and 880nm
- Optional Wavelengths: 589nm, 587nm, 880nm, 882nm
- Accuracy: 0.01°Z
- Measurement Range: ±259°Z, ±89.99°Arc
- Temperature control is optional (Only suitable for modern, air-conditioned laboratories)
- Temperature Correction: 20°C, 27.5°C or user-defined
Autopol 880 Plus/880T Plus

This is Rudolph’s newest and most advanced model, designed and tested in collaboration with laboratories analyzing pharmaceutical-grade sugars. The difference it has against 880 or 880T is the rotatable control touch screen and pour through sample well to make sample loading and cleaning easier.
- Standards Wavelengths: 589nm and 880nm
- Optional Wavelengths: 589nm, 587nm, 880nm, 882nm
- Accuracy: 0.01°Z
- Measurement Range: ±259°Z, ±89.99°Arc
- Temperature control is optional (Only suitable for modern, air-conditioned laboratories)
- Temperature Correction: 20°C, 27.5°C or user-defined
Purity System
The purity software comes standard on all Rudolph’s Saccharimeters but a refractometer is needed. The PURITY software, combined with a refractometer, enables dilution on either a weight/weight or weight/volume basis, which can be predefined for each sample name. Please visit our Rudolph Refractometer page to choose the model.
What is Purity Software?
The AUTOPOL® models 589, 880, 880 PLUS, and 880T consistently display Purity as if measuring a 1 normal solution, as defined in SPS-1: 3.1. A “normal sugar solution” is specified as 26.0160 g of pure sucrose weighed in vacuo and dissolved in water at 20.00°C to a final volume of 100.000 cm³. This is equivalent to 26.000 g weighed in the air under standard conditions (1013 mbar, 20°C, 50% relative humidity) and dissolved in water to the same final volume. Accordingly, Rudolph displays:
%Sucrose = °Z reading corrected for dilution
Example: a 1/4 normal wt. solution reading 13.70°Z will read (4 x 13.70°Z) 54.80 %Sucrose.
%RDS-OP = Refractometer dissolved solids or Brix original product before dilution
Example: a 3:1 dilution having a refractometer Brix reading of 14.30 would read 42.90 %RDS-OP (14.30 Brix x 3)
%PURITY = (%Sucrose/%RDS-OP) x 100 x apparent density polynomial
Sample Cell Types
The 14 Style Cells are the standard type while 33 style cells are used for pour-in sampling. It comes with 50mm, 100mm, and 200mm variations.
If you choose to have electronic temperature control, then 41T style cells are suitable. 32 style cells are for the automation system.