832 KF Thermoprep with 728 Magnetic Stirrer, 831 KF Coulometer, and accessories

Easy sample preparation

Sample preparation is straightforward with the 832 KF Thermoprep. The sample is weighed in the sample vial, and the vial is then sealed using a crimping tool. The hermetic sealing of the vials by the PTFE-covered septa prevents any moisture uptake from ambient air. Contamination and carryover effects are minimized as each sample is introduced into its own sample vial. The vial containing the sample to be analyzed is positioned above the oven and lowered into the heating block. The oven heats the sample, which releases the moisture. The dry carrier gas enters the vial and sweeps the moisture from the vial to the Karl Fischer titration cell. Depending on the sample’s water content, the subsequent KF water determination can be carried out volumetrically or, for trace amounts, coulometrically.

Sample vessel size flexibility

The 832 KF Thermoprep can accommodate many different sized sample vessels. The oven is sized to fit Metrohm standard sample vials perfectly, but its construction is flexible enough so that it can be modified to accommodate almost any vial.