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 • [log in to unmask]
Stable Isotope Lab Coordinator
CREAIT • TERRA Facility • Stable Isotope Lab
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Memorial University of Newfoundland
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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
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: [log in to unmask] | T: (+43-1) 2600-21766|
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