Standard Consumables for Liquid-Phase NMR
• Economy and High Throughput NMR Sample Tubes
• 3 mm to 30 mm OD Precision NMR Sample Tubes
• Quartz (CFQ) and Suprasil® Tubes for Photochemistry and 11B
• NMR/EPR Tube Caps
• PTFE Tube Liners for Corrosive Sample and 29Si NMR
• Amberized NMR Tubes for Light Sensitive Samples
• Double Layered Tubes for Toxic Samples
Economy and High Throughput NMR Sample Tubes
3mm Economy NMR Tubes
With the steady increase of SNR on modern NMR spectrometers, the trend of small volume testing fits in high-throughput NMR to save on solvent costs. Wilmad-LabGlass presents a 3mm OD Economy Sample Tube with the same outstanding quality and performance as our legendary 5mm line. The new 4″ version is designed for Bruker’s SampleJet system and possesses a tighter tolerance for use with the SampleJet cap which is sold separately. All are shipped in our reusable polyethylene Twist-Pack which provides contamination-free, chemically resistant and mechanically robust protection.
Our WG-3000 Economy Sample Tubes – No Silkscreen or Sandblast. Order Caps Separately.
|Product #||Length |
|Tolerance (mm)||MHz||Wall Thickness|
|WG-3000-3-50||3||2.95±0.03 OD||High-Throughput||.27±0.03 mm|
|WG-3000-4-50||4||2.95±0.03 OD||High-Throughput||.27±0.03 mm|
|WG-3000-7-50||7||2.95±0.03 OD||High-Throughput||.27±0.03 mm|
|WG-3000-8-50||8||2.95±0.03 OD||High-Throughput||.27±0.03 mm|
|521-P-100||100 per pack|
|521-P-1000||1000 per pack|
Our 5mm Economy NMR Tubes
Wilmad-LabGlass Economy NMR Tubes are manufactured from borosilicate glass that meets the ASTM Type 1 Class B standard and recognized as N51A. Due to its nature, this glass has much less thermal-shock resistance than Class A glass used for our Precision Tubes. It may contain Fe2O3which is paramagnetic and has certain impact on shimming quality.
Economy brand tubes are recommended only for 1D NMR experiments with small organic molecule (Molecular Weight <1500) at ambient temperature. Cooling/heating of these tubes may lead to breakage.**For NMR experiments that involve cooling, heating, biological sample, multi-dimension, multi-nuclei or DNP techniques; please refer to our Precision brand NMR Tubes.
Recently some of our competitors altered our MHz rating standard by advertising inferior tubes for higher magnetic field experiments. The products listed on the same row will have the same performance at the same magnetic field IF the specifications of our competitors’ product are guaranteed as advertised. From this guide we will prove our 60 year philosophy again as “committed to providing customers with cost-effective NMR consumables of the highest quality”.
N E W !!!!!!
Introducing our new 50 Pack! Compared to traditional paper packaging, this reusable polyethylene Twist-Pack provides contamination-free, chemically resistant and mechanically robust protection for your NMR tubes. It is a perfect fit for labs with less demanding NMR tests on small organic molecules.
Our WG-1000 5mm Economy NMR Tube Not Sandblasted. Silk screened with marking spot. Order Caps Separately.
Available in 50 or 100 packs!
|Part Number||MHz Rating||Length |
|O.D. (mm)||Wall |
WG-5mm-Economy NMR Tubes Sandblasted with the product number and a marking spot. Caps included.
|Product Number||MHz Rating||Length (inch)||O.D. (mm)||Wall |
WG-12XX Series Economy NMR Tubes Sandblasted with the product number and a marking spot. Caps included.
3 mm to 30 mm OD Precision NMR Sample Tubes
• NMR Tubes – 3mm OD
• NMR Tubes – 4mm OD
• NMR Tubes – 5mm OD
• NMR Tubes – 6.5mm OD
• NMR Tubes – 7.5mm OD
• NMR Tubes – 8mm OD
• NMR Tubes – 10mm OD
• NMR Tubes – 12mm OD
• NMR Tubes – 13mm OD
• NMR Tubes – 15mm OD
• NMR Tubes – 16mm OD
• NMR Tubes – 18mm OD
• NMR Tubes – 20mm OD
• NMR Tubes – 22mm OD
• NMR Tubes – 24mm OD
• NMR Tubes – 25mm OD
• NMR Tubes – 28mm OD
• NMR Tubes – 30mm OD
Quartz (CFQ) and Suprasil® Tubes for Photochemistry and 11B
• Quartz has extremely low thermal expansion rate and high tensile strength. This feature makes quartz tubes 14 times
more robust during cooling/heating process than corresponding Precision glass tubes.
• Naturally occurring quartz maintains over 85% transmission rate (10 mm thickness, with consideration of reflection loss)
above 265 nm,1,2 which makes quartz tubes preferable in photochemistry studies.
• Quartz sample tubes possess a low Boron density as below 0.1 ppm, which guarantees a clean background in Boron-11
• Quartz has 2 times less dielectric constant than Pyrex® glass, which helps to improve the quality factor.
Suprasil® NMR Tubes
5 mm and 10 mm O.D. Precision Brand NMR Tubes | Suprasil® (Synthetic Quartz)
• Suprasil® is high purity synthetic fused silica materials with outstanding optical characteristics in the deep UV to the near IR. The transmission rate from 190 nm to 2600 nm is well over 95% (10 mm thickness) excluding reflection. The Suprasil tubes are ideal for photolysis experiments that employ 266 nm light from Q-Switched laser or 254 nm light emitted by Hg low pressure lamp with a Schott® UG 5 filter.
• Suprasil possesses similar thermal expansion rate and tensile strength compared to natural quartz.
NMR/EPR Tube Caps
Disposable NMR Tube Caps
Wilmad’s Disposable NMR Tube Caps are made from high quality Polyethylene or Ethylene Vinyl Acetate depending on the O.D. of the tube.
Different colors help to track samples based on various reference solvents.
Packaged in bags of 25, 100 or 1000.
Please avoid using disposable NMR caps when CDCl3 serves as the reference solution as the material(s) could be dissolved. For CDCl3, we recommend PTFE tube caps shown on the next page.
NMR/EPR Tube Caps – PTFE
Wilmad’s PTFE NMR Tube Caps are machined to exact specifications with smaller gyroradius and more homogeneous mass distribution than disposable caps for better spinning stability. These caps are recommended in experiments at high-ultra high field and experiments using Chloroform as reference solution. Will fit Precision Brand NMR Tubes only due to the tight tolerance.
NMR/EPR Tube Caps – Gas-Tight
The Gas-Tight NMR Tube Caps are ideal for experiments that require an air-tight environment under vacuum or low pressure less than 1 bar. Use these caps with Wilmad Medium-Walled and Heavy Walled NMR tubes for better seal and robustness in variable temperature experiment.
#990 Gum Rubber Caps allow easy access via syringe needle.
Our White Rubber Septa seals to 5mm O.D. thin wall Precision NMR tubes.
Designed to maintain excellent glass to rubber contact; inject your sample or reactant into the NMR tube. Great for Air-Sensitive samples, Catalytic studies and Titration experiments. They are manufactured under “white room” conditions with certified raw materials for consistency.
|WG-3891-10||Septa, NMR, White Rubber for 5mm thin wall Precision tube, Pk/10|
|WG-3891-100||Septa, NMR, White Rubber for 5mm thin wall Precision tube, Pk/100|
For NMR investigations where chemical compounds such as hydrofluoric acid, ammonium bifluoride and concentrated hydroxide solutions are present, Wilmad’s PTFE-FEP NMR Tube Liner provides a contamination-free environment.
PTFE-FEP Tube liners are round-bottom and made from Teflon (Polytetrafluoroethylene /Fluorimated Ethylene Polypropylene copolymer). Thin-wall construction minimizes fillingfactor losses. Although the liners are not rigid, they straighten upon insertion into the sample tube. Not recommended for elevated temperature studies. A PTFE plug is included
with each liner.
PTFE-FEP material does not contain any silicon, which makes it ideal in 29Si NMR experiments. Wilmad manufactures high field 500 MHz rating open-ended tube as an adapter to the 5 mm spinner turbine. Please use the depth gauge to fine adjust the position of liner so that no glass part will protrude into the Rf coil limit.
Amberized NMR Tubes for Light Sensitive Samples
Wilmad can offer extra protection for your valuable light-sensitive samples in NMR studies via amberization on the Borosilicate NMR tubes. The transmission rate between 300 to 700 nm is lowered by several orders of magnitude after amberization. Just add’-AMB’ to the Product Number of the tubes that meet the requirement of your experiments.
The minimum order for amberization service is 5 tubes per order.
Double Layered NMR Tube for Toxic Sample
Wilmad’s Double Layered Tube provides extra protection for your toxic sample. It can also be used with a reference standard which is insoluable in the sample or may cause a reaction. Outer tube and inner tube has about 50 μm gap and the system is ideal for variable temperature studies as the components are made of same Pyrex® glass. Each insert fits snugly into the outer tube, like a syringe plunger fits its barrel.