Len: 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 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 <http://www.mun.ca/research/resources/creait/physical-sci/terra/sil/> http://www.mun.ca/research/resources/creait/physical-sci/terra/sil 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. Len 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) 2600-21766| This email message is intended only for the use of the named recipient. Information contained in this email message and its attachments may be privileged, confidential and protected from disclosure. If you are not the intended recipient, please do not read, copy, use or disclose this communication to others. Also please notify the sender by replying to this message and then delete it from your system.