Ash content of Sugar by Conductometric

The EC500T and EC510T conductivity meter could test the ash content of sugar by conductometric.

The ash content of sugar refers to the percentage of the weight of the sample that remains after the organic matter is completely removed after burning in the sugar. Ash is an important indicator of sugar. If the ash content exceeds the standard, the grade of white sugar will drop.

The gravimetric method is in common used for determining ash of the sugar. Conductometric methods provide a simple, rapid and accurate means of determining ash content of high fructose syrup for industry determining, that can be used to replace the gravimetric method.

The conductometric method is widely apply to beet sugar, white sugar, fructose glucose syrup and so on.

The conductivity ash measurement method is to dissolve a certain quality of white sugar in a certain volume of water to measure the conductivity value of the solution.

1. The Principle

Conductivity reflects the concentration of ionized water-soluble salts. The conductivity of known sugar solution is measured, and then the conductivity ash can be calculated by using the conversion coefficient.

The EC500T and EC510T conductivity meter supports the measurement of conductivity ash generally calculating the ash content using an ash conversion coefficient.

The conversion coefficient (K) of the conductometric ash is given through the standards or a number of tests.

The relstionship established for conductometric ash in high fructose syrup is: Ash（g/100g）＝K×(Csample-0.39×Cwater）.

Ash Conversion Factor: Represents the conversion coefficient K of the conductivity of the solution to ash, which has a small value of 10-4.

Blank Conductivity: It allows to input manually or measure in the blank.

2. Recommended Configuration

• EC500T and EC510T Conductivity Meter
• EC500T 
  • Conductivity Range: 0.000 μS/cm～2000mS/cm
  • Conductivity Resolution: 0.001 μS/cm, automatic switching according to the range
  • Conductivity Accuracy: ±0.5% (FS)

• EC510T 
  • Conductivity Range: 0.000 μS/cm～3000mS/cm
  • Conductivity Resolution: 0.001 μS/cm, automatic switching according to the range
  • Conductivity Accuracy: ±0.5% (FS)

• Electrodes

          DJS-0.01VT Conductivity Electrode, apply to test the conductivity of blank.

             DJS-0.1VTG Conductivity Electrode, apply to test the condcutivity of sample.