Titrators/KF/pH Meters

Potentiometric Titrators, Karl Fischers & pH Meters:

Whether you are a leading manufacturer of APIs, Pharmaceutical Products, Chemical Industry, Public Testing Lab for any commodity, any Govt. Research Institutes or any Govt./Pvt. College, Titration is a chemical process which we learn right in our high school. A Titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a burette to a known quantity of the analyte (the unknown solution) until the reaction is complete. When we automate this process of titration with a suitable instrument having software, it is called as Auto-Titrator. ChromSpec Technologies has a very good range of Auto-Titrators from Lattice Analytics. This product is 100% Made In India.

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Karl Fischer Titrator:

Whatever product you manufacture, it contains certain amount of moisture. Accurate determination of this moisture content gives you any idea about chemical state of your sample/compound.

What Is Karl Fischer Titration?

Karl Fischer titration is a titration method that uses volumetric or coulometric titration to determine the quantity of water present in a given analyte. This method for quantitative chemical analysis was developed by the German chemist Karl Fischer in the year 1935, Today, specialized titrators (known as Karl Fischer titrators) are available to carry out such titrations.

Principle of Karl Fischer Titration:

The principle of Karl Fischer titration is based on the oxidation reaction between iodine and sulphur dioxide. Water reacts with iodine and sulphur dioxide to form sulphur trioxide and hydrogen iodide. An endpoint is reached when all the water is consumed. The chemical equation for the reaction between sulphur dioxide, iodine, and water (which is employed during Karl Fischer titration) is provided below.

I2 + SO2 + H2O → 2HI + SO3

Drying tube, sample injection cap, electrode analysis, Drain cook, a cathode chamber, detection electrode, rotor, anode chamber, KF reagent.

Ingredients of KF reagent:

Iodine, Buffer (Imidazole), sulphur dioxide, solvent (methanol).

Karl Fischer Titration Procedure:

The Karl Fischer titration experiment can be performed in two different methods. They are:

Volumetric determination – This technique is suitable to determine water content down to 1% of water. The sample is dissolved in KF methanol and the iodine is added to KF Reagent. The endpoint is detected potentiometrically.
Coulometric determination – The endpoint is detected in this experiment electrochemically. Iodine required for KF reaction is obtained by anodic oxidation of iodide from solution.

Advantages of Karl Fischer Titration:

It is fitted for determining water in gases, liquids and solids.
The coulometric titrator helps in detecting free water, dissolved water, and emulsified water.
It is a swift process which demands a minimal amount of sample preparation.
Extremely accurate method.