NMR Tubes
Thin, glass tubes of different lengths, wall thicknesses, outer diameters, cambers, concentricities, and I.D. and O.D. tolerances designed to hold samples during nuclear magnetic resonance spectroscopic analysis; may include tube cap.NMR tubes are required for analyzing samples using nuclear magnetic resonance spectroscopy. Choose an NMR tube that most closely matches the frequency (MHz) of your spectrometer.
Typically made of borosilicate glass and offered in seven- and eight-inch lengths, the outer diameter of the tube can range from 3mm to 10mm, with 5mm being the most common. For greater testing precision, look for thin-walled NMR tubes. Quartz NMR tubes with low boron concentrations of boron are also available if boron NMR is used.
NMR tubes are available in reusable or disposable versions. Some versions have screw caps, with or without septa. Polyethylene caps are the most common.
Specifications for NMR tubes may include concentricity and camber.
- Concentricity is how round the tube is and is measured using the inner and outer walls
- Camber is a measure of the tube’s straightness; poor camber can cause the tube to wobble during rotation, which can produce spinning side bands
Nuclear magnetic resonance spectroscopy allows you to observe the local magnetic fields around atomic nuclei. As radio waves excite the nuclei, their resonance is detected by a sensitive radio receiver that provides information about the molecule’s electronic structure. NMR spectroscopy is also used to identify monomolecular organic compounds, proteins, and other complex molecules.
Norell Inc 5mm, 400 MHz, 178mm SECURE SERIES NMR TUBE, 5 Tubes per pack, INCLUDES "NORLOC WITH SECURITY BAND"
The Secure Series™ NMR tubes feature several patented design elements that add a superior level of sample containment and isolation, safeguarding the integrity of precious or critical NMR samples and assuring secure retention of the NMR tube in the spinner turbine. A patented Security Band™ that engages and locks into the NorLoc II Security Cap™, securely joining the cap to the NMR tube. A patented proprietary surface treatment with a unique textured surface ensures precise and positive retention in Bruker, Agilent/Varian, and Jeol spinner turbines. Because of the low coefficient of thermal expansion, Secure 33 Series™ NMR tubes show a high degree of thermal shock resistance, a necessary attribute to prevent breakage when large temperature variations are expected in variable temperature studies, degassing samples through freeze-pump-thaw cycles, etc.
Norell Inc 5mm, 500MHz 8" VALVED NMR TUBE, 1 Tube per pack
Handle your NMR sample without flame-sealing your tubes. Fluoropolymer covered o-ring eliminates material incompatibilities. Completely greaseless fluoropolymer assembly, which is easy to use and to disassemble for cleaning. Includes female joint for quick attachment to your vacuum rack. A vacuum level of 10-7 kPa (10-6 torr) can be attained with this valve. While this valve can also withstand an internal positive pressure to 500 kPa (5 bar, 72 psi), the VT Valved NMR Tube series is intended principally for vacuum work. When pressurizing internally (by heating the NMR tube, for instance), the valve must be fully closed, so that the female vacuum adapter joint (the short glass tube that slips over the top of the PTFE valve stem, sealing against the upper o-rings) cannot be used to apply or be exposed to a positive pressure.
Norell Inc 5mm, 500MHz 7" SELECT SERIES NMR TUBE, 5 Tubes per pack
Select Series NMR Tubes are ideal for cold refrigeration storage, work with cryo-probes and, variable temperature studies. Key properties that make this glass type desirable for NMR are its high degree of thermal shock resistance and low expansion coefficient. This allows for a greater margin of safety from breakage when used in variable temperature applications and freeze/thaw cycling, or under any other application where large temperature variations are required in the experiment.
Norell Inc 5mm, 800MHz 7" EXTREME SERIES LEVEL 3 VALVED THIN WALL NMR TUBE FOR HIGH PRESSURE, 1 TUBE PER PACK
Level 1 includes an additional fluoroelastomer o-ring seal to augment the existing fluoroelastomer o-ring, thus providing a secondary, backup o-ring if the primary one leaks or fails because of wear or physical damage. Level 3 incorporate additional chemical and solvent resistance over Level 1 by the substitution of Kalrez perfluoroelastomer o-ring(s) in place of the fluoroelastomer o-rings. Kalrez perfluoroelastomer is made from tetrafluoroethylene, and is virtually chemically identical to PTFE fluoropolymer, but physically Kalrez behaves as an elastomeric material, unlike PTFE. Kalrez furnishes the same unsurpassed chemical resistance and degree of inertness as that of PTFE, while affording a higher service temperature limit (up to 288°C compared to 260°C for PTFE) and no propensity to cold flow (or distort under a constant mechanical force or pressure).
Norell Inc 5mm, 800MHz 7" EXTREME SERIES LEVEL 1 VALVED HEAVY WALL NMR TUBE FOR HIGH PRESSURE, 1 TUBE PER PACK
Level 1 includes an additional fluoroelastomer o-ring seal to augment the existing fluoroelastomer o-ring, thus providing a secondary, backup o-ring if the primary one leaks or fails because of wear or physical damage. Level 3 incorporate additional chemical and solvent resistance over Level 1 by the substitution of Kalrez perfluoroelastomer o-ring(s) in place of the fluoroelastomer o-rings. Kalrez perfluoroelastomer is made from tetrafluoroethylene, and is virtually chemically identical to PTFE fluoropolymer, but physically Kalrez behaves as an elastomeric material, unlike PTFE. Kalrez furnishes the same unsurpassed chemical resistance and degree of inertness as that of PTFE, while affording a higher service temperature limit (up to 288°C compared to 260°C for PTFE) and no propensity to cold flow (or distort under a constant mechanical force or pressure).
Norell Inc 5mm, 800MHz 7" EXTREME SERIES LEVEL 3 VALVED MEDIUM WALL NMR TUBE FOR HIGH PRESSURE, 1 TUBE PER PACK
Level 1 includes an additional fluoroelastomer o-ring seal to augment the existing fluoroelastomer o-ring, thus providing a secondary, backup o-ring if the primary one leaks or fails because of wear or physical damage. Level 3 incorporate additional chemical and solvent resistance over Level 1 by the substitution of Kalrez perfluoroelastomer o-ring(s) in place of the fluoroelastomer o-rings. Kalrez perfluoroelastomer is made from tetrafluoroethylene, and is virtually chemically identical to PTFE fluoropolymer, but physically Kalrez behaves as an elastomeric material, unlike PTFE. Kalrez furnishes the same unsurpassed chemical resistance and degree of inertness as that of PTFE, while affording a higher service temperature limit (up to 288°C compared to 260°C for PTFE) and no propensity to cold flow (or distort under a constant mechanical force or pressure).
Norell Inc 5mm, 900MHz 7" SELECT SERIES NMR TUBE, 5 Tubes per pack
Select Series NMR Tubes are ideal for cold refrigeration storage, work with cryo-probes and, variable temperature studies. Key properties that make this glass type desirable for NMR are its high degree of thermal shock resistance and low expansion coefficient. This allows for a greater margin of safety from breakage when used in variable temperature applications and freeze/thaw cycling, or under any other application where large temperature variations are required in the experiment.
Norell Inc 3mm, 4" (103.5mm) LONG NMR TUBES FOR AUTOMATED SAMPLE TUBE SYSTEM, 96PK, INCLUDES OPEN PORT SAMPLE VAULT CAPS, INCLUDES SAMPLE VAULT™ NMR SAMPLE TUBE RACK
3mm, 4" (103.5mm) LONG NMR TUBES FOR AUTOMATED SAMPLE TUBE SYSTEM, 96PK, INCLUDES OPEN PORT SAMPLE VAULT CAPS, INCLUDES SAMPLE VAULT™ NMR SAMPLE TUBE RACK
Norell Inc 5mm, HIGH THROUGHPUT 178mm SECURE SERIES NMR TUBE, 100PKINCLUDES "NORLOC WITH SECURITY BAND" CAPS U.S. PATENT NO. D794,820 and 8,054,080
5mm, HIGH THROUGHPUT 178mm SECURE SERIES NMR TUBE, 100PKINCLUDES "NORLOC WITH SECURITY BAND" CAPS U.S. PATENT NO. D794,820 and 8,054,080
Norell Inc 3mm, 600MHz 7" SECURE SERIES NMR TUBE, 5PKINCLUDES "NORLOC WITH SECURITY BAND" CAPS U.S. PATENT NO. D794,820 and 8,054,080
3mm, 600MHz 7" SECURE SERIES NMR TUBE, 5PKINCLUDES "NORLOC WITH SECURITY BAND" CAPS U.S. PATENT NO. D794,820 and 8,054,080