Moisture (Karl Fischer Titration) Test
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Price
$60 per analysis
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Turnaround time 7 - 9 Business Days
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Rush Available
Technical data sheet
Print- Method description
Moisture by Karl Fischer is determined by automated potentiometric titration with an iodine and sulfur dioxide reagent. Moisture is extracted into an appropriate solvent and is titrated volumetrically (as opposed to colorimetric titration). This method is applicable to high-fat samples or samples that contain compounds that may volatilize when heated or subjected to vacuum (e.g. alcohol, glycerine, etc.)
- Acceptable matrices
This method is applicable to fats and oils, peanut butter, pet foods, solvents, and salad dressings with high fat content (greater than 20%).
- Unacceptable matrices
Organic acids, ketones, or sugars such as sorbitol.
- Limit of quantitation
0.10%
- Equipment
Standard titration set up.
- Method reference
AOAC 984.20, 967.19, 977.10 and AOCS Ca 2e-55.
- Reportable unit
%
- Sample size requirements
15 g
- Information required by submitter
Please supply estimates
- Additional information
Moisture in most food materials can be determined by loss on drying using a Gravimetric Moisture method. For samples high in fat or that contain components that will volatilize under the conditions of the Gravimetric Moisture assays, the Karl Fischer titration may be more appropriate. Note that chemically bound water molecules may be incompletely detected by this method.
Common Moisture (Karl Fischer Titration) Test Testing Questions
We make every effort to keep our methods and detection limits up to date according to the latest standards and qualifications. If you have any questions regarding the limit of detection/quantification or method references, please contact our Customer Service team at 1-800-245-5615.
Our standard turnaround time is 10 business days for most assays. There are some assays that require a longer turnaround time. We also offer a RUSH service that is half the time of the standard turnaround time of the assay at double the cost of the assay. A few assays that we provide cannot be rushed due to the nature of the test. Please check the specific assay you are interested in regarding the ability to RUSH the turnaround time.
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