Analytical Laboratory
Test Detail
Moisture Analysis: PET Resin
| Sample Type | Required Quantity | Equipment Used |
| Resin Flake Preform Bottle | 1 gram | Karl Fisher Coulometric Titrator and Vaporizer |
Purpose
This procedure measures the amount of moisture within a sample using the coulometeric Karl Fischer technique.
Description
A sample is deposited into the analyzer and heated to release all of the moisture within the sample. The moisture then reacts with the iodine and generates a current which allows for an accurate measurement to be made. Once the analyzer moisture reading falls to within the background reading, the analyzer calculates the ppm moisture by the calculated weight of water (reacted with the iodine) divided by the input sample weight.