Home > Automatic saccharimeters

Automatic saccharimeters

Supplier News
article image THE AUTOPOL 880 Series Automatic Saccharimeter

THE AUTOPOL 880 Series Automatic Saccharimeter from A.L.P.E. is a dual wavelength microprocessor based saccharimeter capable of measuring at both 589 nm and 880 nm. The 880 nm ICUMSA Approved near infrared wavelength allows measurement of dark sugar factory juices, while the AUTOPOL Automatic Saccharimeter Purity Mode allows simultaneous measurement and display of PURITY, BRIX and POL.

The AUTOPOL 589 Series Automatic Saccharimeters provide the same features, measuring speed and accuracy of the AUTOPOL 880 but at the single wavelength of 589 nm.

Rudolph Research Analytical knows Sugar Technologists around the world demand 24 hour operation, 7 days a week for up to 9 months out of the year. They expect 0.02°Z reproducibility and accuracy.

Rudolph Research understands these demands and requirements, because Rudolph has been serving the sugar industry since 1940. Throughout those sixty plus years, Rudolph has dedicated itself to manufacturing quality instrumentation and providing superior technical and service support, both directly and through its worldwide dealer network. This dedication is consistent with Rudolph's over 2,000 instruments installed worldwide, with many of those instruments still in operation after 25 years of service.

The most important feature of the AUTOPOL 880 is its ability to measure at two wavelengths: 589 nm and 880 nm (NIR). 589 nm can be selected for conventional analysis using chemical or lead clarifiers, or 880 nm can be selected for polarimetric sugar measurements in the near infrared NIR). 880 nm is above the absorption level of most dark sugar factory solutions allowing measurement of filtered but non-chemically clarified juices.

Using Whatman 91 filter paper, Manville Filter Cel Grade Celite, a 100 mm cell and the proper technique, sugar solutions from crushed cane to molasses and raffinate can be measured.

Dilution and Cell Length Correction

Whether sugar analysis requires a 100 mm or 200 mm cell, whether for 1/2 normal (13g/100ml), 1/4 normal (6.5g/100ml) or full weight sugar solutions, the AUTOPOL 589 and 880 provide the correct multiplier to display the reading as if the sample were prepared as a 1 normal solution in a 200 mm optical pathlength cell.

Automatic Temperature Correction

The AUTOPOL 589 and 880 have a built-in temperature probe to measure the temperature of the sample or quartz control plate being measured. The AUTOPOL 589 and 880 display the temperature source and type of correction. Utilising factory programmed temperature coefficients the AUTOPOL saccharimeters can make the following types of temperature corrections:

(1) A 30°C sucrose sample can be measured and corrected to 20°C or 27.5°C.

(2) A Quartz Plate measured at 25°C by the built-in temperature probe can be automatically corrected to 20°C.

Automatic Calibration

Calibrating the AUTOPOL 589 and AUTOPOL 880 is quick and simple. First, place a Rudolph Quartz Control Plate calibration standard on the optical rails and enter the Quartz Plate value in the appropriate window. Second, enter the temperature or use the temperature provided by the built-in temperature probe to correct the measurement to either the ICUMSA standard temperature of 20°C or the Tropical reference temperature of 27.5°C. Third, press 2 buttons and calibration is complete.

Newsletter sign-up

The latest products and news delivered to your inbox