we have used 9mm glass or metal tubing with 3/8 cajon fittings with no problem for years.
On 7 Oct 2014, at 18:41, Roland A. Werner <[log in to unmask]> wrote:
> Hi Lisa,
> in former times there have been a company called "Louwers Hapert" in NL. Perhaps the URL: http://www.louwers.nl/ is of help. Greetings
> On 07.10.2014 16:58, Lisa Wingate wrote:
>> Dear List members,
>> I was wondering whether someone in Europe or beyond (USA) could help me source some glass tubing for working under vacuum (~0.3Pa). I am now committed to using Swagelok 3/8" Ultra Torr fittings and I would like to find a glass blower or glass supplier with a compatible tube O.D. Most of the glassblowers I have spoken to in France only have metric tubing 9mm or 10mm with a tolerance of +/- 0.15mm.
>> So can anybody suggest a supplier/glassblower that they have worked successfully with to obtain glass tubing that fits well with the Swagelok Ultra Torr 3/8" fittings.
>> One option at the moment may be to have the 10mm glass ground down to ~9.5mm. The glass is no longer polished in appearance or feel and I wondered whether I should worry about this for the vacuum seal. Alternatively, the other option may be to ask Swagelok to drill out the Ultra Torr to fit 10mm tubing but this may be more expensive and take longer?
>> Any advice welcome on the list or alternately you can contact me offline by email.
>> Thanks in advance,
>> Dr Lisa Wingate
>> Research Scientist
>> Interactions Soil Plant Atmosphere [UMR ISPA 1391]
>> Institut National de la Recherche Agronomique [INRA].
>> 71 Avenue Edouard Bourlaux
>> CS 20032
>> 33882 Villenave d'Ornon Cedex
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