Tips for Cleaning

How to clean Migration Cells:

The Sieg-Mi-Flex cells are disassembled for cleaning and sonicated with isopropanol at room temperature in an ultrasonic bath for about 15 min., then dried. Then rinsed with ethanol pure LC-MS quality and dried again.

How to clean Septa:

The silicone / PTFE septum seal in the GL14 screw caps on the filler neck or spout is not always resistant to isooctane.

Some users have also had this experience with Isooctan. PTFE is resistant to isooctane. However, if the thin PTFE layer is mechanically injured, it may look as if the septum seal is not resistant to isooctane. If the septum seal of silicone/PTFE is swollen, according to our observations, this is due to over-tightening the caps. Because when the gasket swells, the PTFE layer of the gasket is punctured or broken.
We recommend tightening the fitting only „hand-tight“ and changing the gasket pro forma after each analysis.

Futher information about Septa Replacement can be found here.