Also late, but having used both options, I would strongly recommend a stainless steel hose, with strengthening sleeves at each end for improved lifetime. These are available from suppliers like Statebourne in the UK.
Glyn
*********************************************
Glyn Williams, D.Phil
VP Biophysics
Astex Pharmaceuticals
436 Cambridge Science Park
Milton Road, Cambridge
CB4 0QA, UK
Tel: +44(0)1223 226273
Fax: +44(0)1223 226201
glyn.williams_at_astx.com<mailto:g.williams_at_astex-therapeutics.com>
www.astx.com<
http://www.astx.com/>
*********************************************
From: Plant,Daniel [mailto:dan_at_mbi.ufl.edu]
Sent: 27 January 2014 15:49
To: ammrl_at_ammrl.org
Subject: RE: AMMRL: Liquid Nitrogen Transfer
Late to this conversation but the safest in my opinion is the metal flex hose.
The Teflon is the next best thing but they also will break under time and stress.
Wear eye and face protection in all cases.
Latex hose should be avoided at all costs.
The fellow Lew is referring to was a friend of mine.
The docs never did find out whether it was a sliver of latex or ice but it didn't matter to Sam...
From: Vernon M Russell [mailto:vrussell_at_wlgore.com]
Sent: Friday, January 24, 2014 5:00 PM
To: ammrl_at_ammrl.org<mailto:ammrl_at_ammrl.org>
Subject: AMMRL: Liquid Nitrogen Transfer - Use PTFE
I've been using the same PTFE hose (non reinforced) for 7 years. The only thing I've had to do is trim the ends where the tube slides onto the fill port. This will eventually start to leak due to the tube sliding on and off the fill port. I'd strongly recommend others use the Teflon tubing. You can use short pieces of the Teflon along with a metal coupler to attach to the tank and metal pipe elbows to get the right tube orientation to reach the fill port.
Vernon
This email and any attachments thereto may contain private, confidential, and privileged material for the sole use of the intended recipient. Any review, copying or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please delete the original and any copies of this email and any attachments thereto and notify the sender immediately.
Received on Tue Jan 28 2014 - 01:29:35 MST