Keywords: NMRtubeTeflontap.png Teflon tap used to seal NMR tubes for air-sensitive samples - has a central bore starting at the top of the tap which splits into a T-junction at the bottom One of the openings of the inverted T can be seen in this picture own -- Quantockgoblin 22 52 10 February 2007 UTC Laboratory equipment Laboratory glassware NMR |