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.
Chemglass Life Sciences NMR Tube Cleaner, Wong, 5mm X 7in Tube, Complete
NMR Tube Cleaner, Wong, 5mm X 7in Tube, Complete. Design permits the cleaning of four NMR tubes at the same time. With solvent in the reservoir, rapid suction wets the inside of the NMR tube dislodging the contamination. An acetone wash followed by an air stream dries the tube in seconds. Rate of cleaning is approximately 4 tubes per minute. The NMR tube is inserted into the cleaner with a poly-pro cap placed on the closed end to provide support and a vacuum seal. Lower joint is a 24/40 inner, and the hose connection has an O.D. of 8.5mm at the middle serration. Complete unit comes with an NMR tube washer and 250ml heavy wall filter flask. NOTE: FOR USE WITH 5mm O.D. X 7in TUBES ONLY.**Designed and developed by Dr. Jessie Wong, Schering Plough Research
Sigma Aldrich Fine Chemicals Biosciences WilmadR NMR tubes 10 mm di
Made of Pyrex(R) borosilicate glass for compatibility with ground joints valves and vacuum racks. Precision ground and highly polished for spinning stability and highest reSOLUTIONon. Tubes have round bottoms and include a sandblasted marking spot for labeling samples. Tubes are thin-walled. Tubes that are 9 in. L are for making standards and for use with tip-off manifolds. Precision Wilmad NMR tubes are suitable for high field NMR spectroscopy.
Chemglass Life Sciences Tube, NMR, 3mm, Select Series, With Caps, 7" Long, High-Throughput, Concentricity +- 0.011mm, Camber +- 0.04mm
Tube, NMR, 3mm, Select Series, With Caps, 7" Long, High-Throughput, Concentricity 0.011mm, Camber 0.04mm. NORELL Select Series NMR Tubes are specifically designed for high-resolution NMR. These tubes are manufactured out of ASTM Type 1 Class A glass, commonly referred to as Pyrex 7740 (Corning), Duran, or Kimax (Kimble) KG-33 glass. Several 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 any other application where large temperature variations are required in the experiment.
Sigma Aldrich Fine Chemicals Biosciences KontesR NMR tubes 5 mm dia
Each and every precision 5 mm tube is 100% gauged to meet the most exacting standards. These tubes are made of KG-33 borosilicate glass and are ideal for sealing directly to vacuum manifolds joints or valves. Wall thickness for these precision tubes is 0.38 mm.Caps are attached. All tubes supplied in packs of 5.
Sigma Aldrich Fine Chemicals Biosciences Solid glass beads borosili
for use as distillation column packing mixing beads and boiling stones. Each 454 g box has a packing volume of approx. 360 cm3. /-10% variation in bead size.
Sigma Aldrich Fine Chemicals Biosciences Aldrich ColorSpec NMR tubes, 5 mm x 8 in, 50/pk
This new range of premium quality NMR sample tubes feature color-coded banding and caps and a MHz rating that allows instant visual identification to tube grade and application. No more mix ups after cleaning. Concentricity × camber:102 μm × 102 μm; Parameter:200 MHz frequency; Color:color-coded blue
Chemglass Life Sciences Tube, NMR, 5mm, Standard Series, With Caps, 7" Long, Concentricity +- 0.025mm, Camber +- 0.075mm
Tube, NMR, 5mm, Standard Series, With Caps, 7" Long, 100 MHz, Concentricity ¿ 0.025mm, Camber ¿ 0.075mm. NORELL Standard Series NMR Tubes are manufactured out of ASTM Type 1 Class B glass, commonly referred to as N-51A. Applications that are suited for using this type of glass are routine NMR, where samples are run under room temperatures with no thermal gradients, for auto-sampling systems or high throughput NMR. Redesigned from the ground up and with emphasis on quality and precision, Norell has succeeded in virtually eliminating tube wall and bottom variation. It is not recommended to fuse this glass with standard vacuum manifolds and like, since they are generally made of Type 1 Class A glass.
Sigma Aldrich Fine Chemicals Biosciences AldrichR NMR-tube cleaner1EA
Eliminate washing and oven drying of NMR tubes. With solvent in the reservoir rapid suction dislodges material and an acetone wash followed by an air stream dries the tube in seconds. Average rate of cleaning is 1 tube/minute. Use with 7 in. L tubes except tube cleaners Z282383 and Z282391 which may be used with 7 or 8 in. L tubes. A PP tube cap placed on the closed end of an inverted NMR tube holds the tube in place and seals the system to allow efficient vacuum. Applied suction sprays solvent inside and against the closed end of tube for thorough cleaning. Model D has 100 mL solvent reservoir for less frequent filling. Model E has a ground-glass stopper.
Wilmad-LabGlass™ SP Scienceware™ 7.5mm O.D. Thin Walled Precision NMR Tube
To maximize SNR, Precision NMR Tubes have minimal paramagnetic impurities that would impact shimming. Tight I.D. and O.D. tolerance as small as 0.0065mm accommodates Wilmad inserts
Wilmad-LabGlass™ SP Scienceware™ 12mm O.D. Thin Walled Precision NMR Tube
To maximize SNR, Precision NMR Tubes have minimal paramagnetic impurities that would impact shimming. Tight ID and OD tolerance as small as 0.0065mm accommodates Wilmad inserts
Wilmad-LabGlass™ SP Scienceware™ 10mm O.D. Thin Walled Quartz NMR Tube
Wilmad Precision NMR Quartz Tubes have an extremely low thermal expansion rate and high tensile strength, which is 14 times more robust during the cooling/heating process than Type 1 Class A glass tubes
Bel-Art™ SP Scienceware™ Wilmad-LabGlass™ Double Layered NMR Tubes for Toxic Samples
Bel-Art™ SP Scienceware™ Wilmad-LabGlass™ Double Layered NMR Tubes provides extra protection when working with toxic samples.
Wilmad-LabGlass™ SP Scienceware™ 12mm O.D. Heavy Walled Precision NMR Tube
To maximize SNR, Precision NMR Tubes have minimal paramagnetic impurities that would impact shimming. Tight ID and OD tolerance as small as 0.0065mm accommodates Wilmad inserts