Re[2]: HPLC: PEEK vs. SS
GARY.W.LANGE@monsanto.com
02 Nov 1998 09:17:57 -0600
No complaints about peek tubing or fittings here. I've been using
Upchurch peek tubing for 7+ years now from 50 ul/minute to 2 ml per
minute (psi up to 3500) with .1% TFA/ACN and have never had a piece of
tubing burst. I haven't had much luck with the one piece fittings
with built in ferrules, they often pop. I've had very good luck with
fingertight II fittings (Upchurch, Delrin or peek) with a separate
ferrule. I also use the lite touch II (Upchurch), 2 piece ferrule
system to attach peek to injectors. You can use these with either
peek fittings or with a stainless steel nut. I can't comment on
injectors made out of peek though.
Gary Lange
gary.w.lange@monsanto.com
______________________________ Reply Separator _________________________________
Subject: Re: HPLC: PEEK vs. SS
Author: abrf-request@aecom.yu.edu at INTERNET
Date: 10/30/1998 4:02 PM
> I realize that I'm basically repeating myself on this subject but we have
> had none of
the problems that are being reported with PEEK tubing and fittings. We have
10
HPLC's in our labs that are used extensively and a quick survey of the
experienced
operators came up with nobody who would favour a return to SS. While PEEK
doesn't outperform (or underperform) SS in our opinion it's ease of use
gives it the nod.