Looking for a Tekmar septum needle adaptor

[dlntx9]

I've been searching around a bit and haven't had much luck locating a
14-4913-253 Septum needle adapter kit, HP 5890A, 6890, capillary injection port.
Anyone have any suggestions on where I might be able to pick one of these up, or if an alternative configuration would be optimal.
I have an Tekmar 7000ht that I will be using with a 5890, primarily for analyzing residual etoh, and terpenes in hops.

[MSCHemist]

I have some parts of it (not the complete package) in my box of parts. My suggestion which is from Agilent is don't use it. The headspace line puts too much pressure into the inlet and confuses the EPC so that it doesn't reach ready and start the run. It is much better to splice it onto the carrier feed with a Valco ZDV union (two actually). I have mine setup that way and it works fine and I set it up so that it doesn't interfere with my 7683 ALS injector tower.

edit: mine is on a 6890N. It is the same deal for the 5890 though cut the carrier feed which is the 1/16" line (Not the 4mm line which is the septa purge) that goes into the flat section of the inlet weldment. Route the carrier feed to the 7000 with a 1/16" union and bypass the transferline pressure regulator and guage as there is an additional restriction frit there that will often mess with the EPC. Then connect the transferline with the inlet side of the cut with another 1/16" ZDV union in such a way that it doesn't mess with the ALS tower mount and is as close to the inlet as possible. Any cold inlet tubing between the union and inlet should be wrapped in cotton insulation and I used HVAC foil tape to seal it.

Edit I'm assuming your 5890 has an EPC. If not do not bypass the regulator and use that to set the inlet pressure.

[RogerBardsley]

Thanks MSCHemist for the excellent advice on the needle adapter assembly. Your words of wisdom are well appreciated.

Best regards,
Roger Bardsley
Applications Chemist
Teledyne Tekmar