Check out isogeochem wiki pages. Under repair tips there are two listed
(bottom of the page). I have used the second one listed, "DIY GasBench
Needles.pdf" posted by Stephen Romaniello. All parts are listed, which is
handy. And it is a very sturdy setup. I've used glass capillary tubing I
already had as the return (sampling) tubing on the needle so that I can
still monitor for moisture in the line. I've been using on my GasBench.
Works well. 




Alison Pye .  <mailto:[log in to unmask]> [log in to unmask]

Stable Isotope Lab Coordinator

CREAIT . TERRA Facility . Stable Isotope Lab

Alexander Murray Building

Memorial University of Newfoundland

St. John's, NL . Canada . A1B 3X5

ph: (709) 864-3217 . fax: (709) 864-2589




From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On Behalf
Of WASSENAAR, Leonard Irwin
Sent: February 22, 2017 6:58 AM
To: Alison Pye
Subject: Double walled needle recipe


Colleagues - 


Does anyone have a great recipe and parts list for the construction of a
double-walled side-port or bottom-port needle, the kind where the
bottom/side port can be sealed by holding inside a 2-3 mm thick vial septa
and the rest flushed with He gas?  E.g. for use on Gasbench, Trace Gas,
Multiflow, etc.  




Leonard WASSENAAR, Ph.D. |Team Leader |

Department of Nuclear Sciences and Applications | Isotope Hydrology
Laboratory |

International Atomic Energy Agency | Vienna International Centre, PO Box
100, 1400 Vienna, Austria |

Email:  <mailto:[log in to unmask]> [log in to unmask]  | T: (+43-1)


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