What is Karl Fischer used for?
Karl Fischer (KF) titration is a redox reaction which uses the consumption of water during the reaction to measure the amount of water in a sample. It is the reference method for water determination because of its specificity, accuracy and speed of measurement. It takes place in an organic solvent.
Which electrode is used in Karl Fischer?
The most advanced KF titration technology uses a double platinum electrode for electrochemical indication of the end point, but visual and photometric indicators are also used.
What is KF solution?
As shown in Formula (1) below, the Karl Fischer method uses Karl Fischer reagent, which reacts quantitatively and selectively with water, to measure moisture content. Karl Fischer reagent consists of iodine, sulfur dioxide, a base and a solvent, such as alcohol.
What is kf factor limit?
Standardization is valid, if concentration should be not less than 5 mg and not more than 7mg. The relative Standard deviation between two average KF factors of water and DST determined consecutively should not be more than 3.0 % [Average of two factors (2 with water and 2 with DST) to be considered for calculation.]
Which solvent is used in Karl Fischer titration?
Karl Fischer discovered that this reaction could be modified to be used for the determination of water in a non-aqueous system containing an excess of sulfur dioxide. He used a primary alcohol (methanol) as the solvent, and a base (pyridine) as the buffering agent.
What is KF reagent?
What is KF factor?
How do you calculate Karl Fischer factor? The water equivalence factor F is determined according to the formula 0.1566 x w / v in mgs of H2O per ml of reagent, where W is the sodium tartrate weight in mgs, and V is the reagent volume in ml.
What do you need to know about Karl Fischer titrators?
This compact Karl Fischer titrator combines ease of use with accuracy, reliability, and safety offering Swiss-made quality at a convenient price. Simple and intuitive operation: Select a pre-installed method and push the button. The titration is carried out automatically
How does the Karl Fischer moisture analyzer work?
Version 2.0 Kam Moisture Analyzers incorporate the coulometric principle applied to Karl Fischer titration. Karl Fischer titrimetry is an accurate moisture measurement method utilizing the quantitative reaction of water with iodine. Operates on either AC or DC. Ambient temp.:
How long does a Karl Fischer titrimetry last?
Karl Fischer titrimetry is an accurate moisture measurement method utilizing the quantitative reaction of water with iodine. Operates on either AC or DC. Ambient temp.: Fully portable with a rugged design suitable for the field, a rechargeable battery life of 16 hours, and storage for all required consumables.