Use to tip-off NMR tubes

NMR Tube is inserted in lower Ace-Thred port and tightened via bushing for vacuum-thaw work. Vacuum line is connected to side hose connection. Use with ³/₈" or ⁷/₁₆" inner diameter tubing, size E hose connection. Tube can then be tipped-off with flame. Aluminum shield bonded to nylon bushing helps retard heat transfer. Each port is individually controlled by smooth-acting, semi-needle, threaded PTFE plug to allow removal of one tube while others are still under vacuum, vacuum of 10-6 is common. PTFE plug and tip-off port o-rings are FETFE or Viton. Tip-off ports can be supplied for 5 mm, 8 mm and 10 mm NMR tubes. Manifolds can be supplied with single port or multiple ports of the same size or different sizes.