Derek,
You might want to try New Objective (http://www.newobjective.com/) - I,
and others that I know, have had good luck with their needles and other
nanospary and low-flow LC products. I don't have the Protana source
but I believe their needles fit it.
Regards,
Ioannis Papayannopoulos
AstraZeneca R&D Boston
Worcestrer, MA
--- Derek Bradley <Derek.Bradley@ucl.ac.uk> wrote:
> Hi Guys,
>
> Does anyone know of any suppliers of nanospray needles other than
> Protana?
> I've been using theirs up until now but find them unpredictable in
> how
> easily they open and stay spraying and would like to try other
> sources for
> the comparison. If anyone has any tips I'm generally spraying tryptic
>
> digest/protein solutions using 50:50 MeOH:1% acetic acid.
>
> Thanks,
>
> Derek Bradley
> Dept. of Medicine
> UCL
> London
>
>
>
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