Kimble® Kontes® Seal Off NMR Tube with Cap and Marking Spot, 9-Inch
These Kontes® Seal Off NMR tube provide the best security against sample degradation during the investigation of volatile, air-sensitive or toxic compounds. Manufactured from ASTM, Type 1, Class A, borosilicate glass. Overall length is 9-inch. Constriction opening 0.5 to 2.0mm and is located 1.8-inch from the cap end of the tube leaving a 7.2-inch long tube after seal-off. Each tube is supplied with a polyethylene cap and features a sand blasted marking spot for easy identification. Diameter: 5mm. Overall Length: 9-Inch.