Hi everyone,

I have a septa / liner / insert query.
What does everyone use in their sample vials ?

We have had a fairly random selection in our lab
(plastic, teflon/rubber, and some mystery ones)
and I think I might treat myself to some new
ones as those that I've been using don't seem to
survive a silylation reaction and I'm getting
'muck' in my vial, which is showing up on my
GC.

Any recommendations or "avoid these ones" ?

Is Teflon the liner of choice ? Does it depend
on which reaction you might be performing, i.e.
would you use a different liner for storing lipids
in solvent from that used for enzymatic or
derivatisation reactions ?

Thanks
Jo