These tubes are designed to improve sample handling during the investigation of volatile, air-sensitive, or toxic compounds.

• KONTES® HI-VAC® valve maximizes sample recovery
• Greaseless valve features a borosilicate glass body and PTFE plug so that the sample is always in contact with inert materials
• Rotationally symmetrical design, with two lateral ports located near the valve seat, permits use at higher temperatures
• FKM O-ring seal is used to connect the valved NMR tube to a vacuum system

Suitable for use in instruments with field strengths greater than 360 MHz.