Table of Contents
Is water content moisture content?
Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, crops, or wood.
What is the difference between Lod and water content?
Water content is determined by the Karl Fischer titration method and it consists of only water i.e moisture content. Loss on drying (LOD) is determined by heating the sample below its melting point in an oven and it includes all volatile matter including water content and solvents.
What is the formula of water content or moisture content?
The amount of water is determined by subtracting the dry weight from the initial weight, and the moisture content is then calculated as the amount of water divided by the dry weight or total weight, depending on the reporting method.
What is difference between Lod and KF?
The Important difference between KF and LOD is, KF determines only moisture content in the sample and LOD determines weight loss of sample due to sample drying including volatile impurities.
What is the difference between moisture and humidity?
Moisture represents the presence of a liquid containing trace amounts of water. Humidity, on the other hand, is the concentration of water vapor in a gaseous state, present in the air.
What is the principle of KF?
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.
What is Karl Fischer reaction?
Why is DST used in KF factor?
DST is primary standard and it is stable up to 150 degree Centigrade. It release free water molecules easily when reacts with KF reagent. This DST has 15.66% water molecules so we can easily calculate and standardize the KF reagent.
What is dry moisture content?
Dry basis moisture content (designated Md in the text) is described by the percentage equivalent of the ratio of the weight of water (WW) to the weight of the dry matter (Wd). Dry basis moisture is most commonly used for describing moisture changes during drying.