Are you getting low recovery rates with your Karl Fisher?  We may know why.
Fri, 5/02/10 – 11:26 | No Comment

If your operating a dual-reagent Karl Fisher Titrator and your getting lower than expected moisture results you may want to check a few things.
First, make sure your analytical balance or specific gravity calculation is not …

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Titration

Titrations in the petrochemical, Biodiesel or food industries to define oils or fats. Acid-base titrations, Redox titrations

Density/Refractive/Brix

Density and Brix measurements of fruit, drinks, sauces, etc., refractive index and concentration measurement of materials

Surface Analysis

Explores measuring surface tension of liquids and contact angle analysis of solid substrates

Thermal

Concepts of heat flows through material, thermal conductivity of material and Wet bulb Globe Thermometer (WBGT)

Karl Fischer Titration

A form of titration dedicated to measuring Moisture with parts-per-million accuracy – coulometric or volumetric

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Karl Fisher; Excess Drift

Submitted by jlevi on Wednesday, 25 March 2009No Comment
Karl Fisher; Excess Drift

If you are getting excess drift > 34 ug/min there may be more than one cause and solution to remedy the error.

These solutions are general best practices for moisture testing but apply specifically to the CSC Scientific Aquapal III Titator.

Cause: Indicates Excess Moisture: (usually caused by adding sample before pressing start.

Remedy: Turn CELL off and on. Check septas for air tight seal.

Cause: Excess moisture in headspace or on walls of vessel.

Remedy: Remove vessel from clamp and SWIRL so anode solution rises along wall to absorb moisture.

Cause: Reagents depleted if more than three (3) weeks old.

Remedy: Change reagents.

We will be offering more tips on how to acquire reliable and more importantly, repeatable results from your moisture titration system.

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