Hi Dr. Gomez,
I have experienced the same problem. That cross
piece is either a VICI ZX.5 or ZX.5L (I can't
remember which, but the difference is the bore
size :0.25mm or 0.50mm respectively).
I have found that the only way to get the small
piece of valcon ferrule tip out is to
mechanically remove it. Ultrasonic treatment in a
strong base may help loosen it a little but won't
budge it on its own, and necessitates cleaning
and drying the union afterwards so I avoid this ...
I've had success be either pulling it out using
the small ferrule remover (Supelco p/n: Z236128)
or pushing it out from the other side of the
union with the butt end of a drill bit (for this
you have to determine if the bore is 0.25 or 0.5mm).
A fair bit of care and steady hands are required for both. Good luck.
Cheers,
Steve
At 12:55 AM 5/3/2007, you wrote:
>Dear GC-IRMS users
>Changing ferrules on my GC-C-IRMS Delta plus XP,
>exactly on the metal Valco piece, that one
>receiving the flux from GC and distributing it
>to 3 out ports (a split to a Cuadrupole DSQ, a
>second split to the oxidation column, and of
>course the exit to the Backflush, so it is a
>"Cross" and not a "T" as usual) I have realized
>that there is a deep blockage on it, probably
>with the rest of a ferrule. I am not able to get
>ride of it. Could anyone out there give me a
>clue to clean this piece. What about using a glass/quartz "X" instead?
>Thanks
>Rafa
>
>Dr. Rafael Núñez Gómez
>Colaborador I+D+I
>Servicio de Isótopos Estables
>Estación Experimental del Zaidín CSIC
>Profesor Albareda 1, 18008 Granada, Spain
>Tf +34958181600 Ext 228
>fax +34958129600
Stephen Taylor
Lab Manager, Isotope Science Lab,
University of Calgary, Physics & Astronomy,
2500 University Dr. N.W.
Calgary, Alberta,
Canada, T2N 1N4
(p) 403 220 8268
(f) 403 220 7773
[log in to unmask]
www.phas.ucalgary.ca/isl
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