NMR Tube, 5mm, Norell, Secure 55 Series, 7″ Long, 400 MHz, Concentricity 007mm, Camber +/- 019mm, pack/5

Description

Description

NMR Tube, 5mm, Norell, Secure 55 Series, 7″ Long, 400 MHz, Concentricity 0.007mm, Camber +/- 0.019mm. The Secure 55 Series™ NMR tubes are made from ASTM Type I Class B borosilicate glass (“high expansion” borosilicate glass such as Kimble N-51A or equivalent) and parallel the properties of the Standard Series™ NMR tubes from Norell. These tubes are ideal for near room temperature analyses of routine samples exposed only to slight thermal gradients. Due to the larger coefficient of thermal expansion of this glass type, we do not recommend fusing these NMR tubes to glass vacuum manifolds or other glass laboratory apparatus, because these are usually constructed from low expansion borosilicate glass such as Pyrex® 7740. The dissimilar thermal expansion rates of the two glass types can result in cracking or breaking of the glass-to-glass seal. Tubes are supplied with the cap color in the picture (Tangerine). Please Note: other cap colors are available, please contact us for details. Made in the United States.