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- Joined: Tue Sep 15, 2015 2:07 pm
The manufacturer of the degassing tubing and chamber states that sodium azide is INcompatible with the specific Tefon membranes used in those degassers (we do not know the specifics, just that they warn against using any of them with sodium azide as their testing showed damage). They do not specify any % or amts.
Solvents such as THF, Chloroform etc are well documented to not be chemically compatible with PEEK parts (Agilent does in fact address this warning in other parts of their own manuals and warns against using any of those solvents where PEEK parts are found. Not just the degasser, as PEEK parts may be found in the injector flow path and seals). Hexane and Heptane are known solvents which can weaken and damage the degassing membranes resulting in internal leaks or condensation unless special methods are taken (we have special versions of the degassing chambers from the manufacturer that claim compatibility with those solvents, but the std ones that Agilent provides in that degasser are not compatible). *This has to do with the properties of the thin tubing used. As you can see, this is a complex topic and you can not generalize suggestions when discussing vacuum degassers. There are many types available and each has it own limitations and applications so it is best to discuss based on application at the time of training.
As noted before, if anyone has questions or concerns about having their degasser serviced or which applications may or may not be safe, please contact Chiralizer Services for more information.