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Vespel vs isopropanol

http://www.chromforum.org/viewtopic.php?t=27355

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Vespel vs isopropanol

Posted: Mon Sep 14, 2015 7:33 am
by Cotton Hawes
Hello everybody.

I faced a trouble with my HPLC - exceeding pressure in injection flow path. I diassembled the injection valve and washed the rotor seal (vespel) in water then isopropanol using ultrasonic bath.
Then i assembled the valve, it worked well for several injection, but now it leaks severely. Could the isopropanol somehow damage the vespel rotor seal?

Re: Vespel vs isopropanol

Posted: Mon Sep 14, 2015 7:58 am
by Gerhard Kratz
Vespel and Isopropanol should be no problem. Please check for scratches on the rotor seal and the rotor seal housing.
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