Tag Archives: Liquid-Phase

核磁共振儀耗材 Accessories for Liquid-Phase NMR

NMR核磁共振儀耗材
1. NMR Sample Tube選用對照表  
2. Standard Consumables for Liquid-Phase NMR   
3. Consumables for Liquid-Phase small Volume and ExternalReference NMR Studies
4. Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR
5. NMR Reference Solutions
6. Accessories for Liquid-Phase NMR
7. Consumables and Accessories for Solid-State NMR

Accessories for Liquid-Phase NMR

Spinner Turbines
Wilmad supplies a full range of Spinner Turbines for Varian/Nalorac and Bruker NMR spectrometers from 1.7mm to 10mm. These Spinner Turbines are manufactured to precision standards that exceeds spectrometers manufacturers’s products in terms of dimension tolerance, reliability and life span.

 Spinner Turbines for Bruker®  Spectrometers

STB-5 ROOM TEMPERATURE 5 MM SPINNER TURBINE
Highlights: 
– Causes less probe insert damage by better insert sample control.
– Tachometer strip now with foil protection for improved life span.
– Longer upper barrel stabilizer easily identified by 3mm yellow band.
– Limited VT operation possible of +40°C above ambient.
– Can be mixed with originals during sample changer operation.
– Susceptibility matched to the originals.


B-PEEK-5 VARIABLE TEMPERATURE 5 MM AMD 10 MM SPINNER TURBINE

Highlights: 
– Causes less probe insert damage by better insert sample control.
– Tachometer strip now with foil protection for improved life span.
– Longer upper barrel stabilizer easily identified by 3mm yellow band.
– Variable temperature operation from -150°C to +200°C.
– Can be mixed with originals during sample changer operation.
– Weight compatible with room temperature spinners.
– Susceptibility matched to the originals.
– Far less likely to break as compared with ceramic spinners if dropped on a hard surface, and more economical.
– Long life high temperature o-rings at top and bottom.


3 TO 5 MM SPINNER TURBINE VARIABLE TEMPERATURE WITH EXCHANGEABLE FINGERS
Highlights: (in addition to STB-5 and B-PEEK-5) 
– Cost effective compared to the full VT version for sample changers
– Allows a portion of the VT air to pass straight past the sample inside the spinner turbine therefore reducing VT gradients and micro sonic flutter due to a high VT flow
– Includes high temperature external O-rings at the top and bottom for long life and a firm grip on the sample at top and bottom.
– Can also be used for spinning experiments.

 
Spinner Turbines for Varian®  Spectrometers

STV-5 ROOM TEMPERATURE 5 MM SPINNER TURBINE
Highlights: 
– Low cost alternative to the full VT version for sample changers.
– Weight and susceptibility matched to originals.
– Can be mixed with originals in sample changer operation.
– Limited VT operation around ambient.
– Does not jam at top of upper barrel during insert operation.
– Tachometer strip now with foil protection for improved life span.


V-PEEK-5 VARIABLE TEMPERATURE  5 MM AND 10 MM SPINNER TURBINE
 Highlights: 
– Low cost alternative to the full VT version for sample changers.
– Weight and susceptibility matched to originals.
– Can be mixed with originals in sample changer operation.
– VT operation of -150°C to 200°C
– Does not jam at top of upper barrel during insert operation.
– Tachometer strip now with foil protection for improved life span.
– Weight compatible with room temperature spinners.
– Very cost effective as compared to the originals.


3 to 5 MM SPINNER TURBINE VARIABLE TEMPERATURE WITH EXCHANGEABLE FINGERS
Highlights: (in addition to STV-5 and V-PEEK-5) 
– Cost effective compared to the full VT version for sample changers
– Allows a portion of the VT air to pass straight past the sample inside the spinner turbine therefore reducing VT gradients and micro sonic flutter due to a high VT flow
– Includes high temperature external O-rings at the top and bottom for long life and a firm grip on the sample at top and bottom.
– Can also be used for spinning experiments.


 

Spinner for Small Volume NMR (Bruker® MATCH® System)
Similar to Bruker® MATCH® system, Wilmad’s Spinner for Small Volume NMR holds a variety of microsample capillaries and is compatible with Bruker®, Varian®, JEOL®’s spectrometers/probes and automatic sample changers. A substantial savings is realized considering the“one size” variety available from NMR probe manufacturers.
The lower portion of each insert fits precisely into the Spinner Turbine; the upper portion holds a short 10 mm NMR tube (almost 4 inches long with open ends) that extends beyond the top. This set-up can be used with autosample changers that grasp the tube above the turbine.


 

Tube Washers

Universal solvent Jet NMR Tube Washer
Wilmad’s Universal Solvent Jet Washer can be used for any length sample tube by a simple adjustment of the flexible PTFE tubing. It is espcially recommended for cleaning our gas-tight sample tubes.
By loosening and retightening the tubing fitting on the assembled washer head, the PTFE tubing that extends into the sample tube is adjusted to the proper length. The washer head is then affixed to a filter flask (with sidearm) and the side tubing is inserted into a washing solvent reservoir. After an inverted sample tube is placed over the PTFE tubing, a vacuum is applied to the flask and the sample tube is pressed against the rubber gasket to form an air-tight seal that starts the solvent flow. By lifting the PTFE tubing out of the solvent reservoir, the sample tube can be air-dried.


Multi-Tube Jet Solvent NMR /EPR Tube Washer/Dryer
Wilmad’s new generation Multi-Tube Jet Solvent Washer/Dryer is recommended for research labs that routinely clean NMR/EPR tubes; a single unit can accommodate up to 5 tubes (5 mm OD) at once. When an inverted tube is inserted onto the PTFE tubing and the open end is immersed under wash solvent in the solvent cup, a reliable vacuum-tight seal will be formed and generate solvent flow under vacuum. After solvent is fully consumed, air flow will follow to
turn the unit into a dryer.

Features:
• Novel design significantly increases the reliability and performance compared to traditional jet solvent washer/cleaner systems.
• PTFE solvent cup and tubing make this unit fully resistant to common organic solvents.
• Greaseless joint between the solvent cup and glass reservoir eliminates possibility of contamination.
• Open design allows for easy cleaning after each use.
• Hands Free during washing/drying cycle.
• Detachable side-arm with screw thread provides convenient vacuum hose connection.



After fitting the washer to a filter flask, an inverted sample tube is inserted into the washer and solvent is introduced into the reservoir using a series of wash bottles. You can perform numerous wash steps and finish by pulling air through the tube to complete the procedure.
Filter flasks are ordered separately. The single tube washers (WG-1207-series)require flasks with vacuum sidearms (see below).

Economy Single Tube Solvent Jet Washer/Cleaner


Filter Flasks with Vacuum Sidearms
Filter flasks have a standard taper Ts 24/40 outer joint and are used with WG-1207 Economy Single Tube Washer and WG-7200 Universal Tube Washer.


Ultrasonic Cleaning Systems
The Ultrasonic Cleaning Systems can wash up to 20 tubes at a time and are recommended for NMR research facilities. Operating at 21,000 sonic vibrations per second, these versatile, compact units can be used with aqueous detergent solutions or organic solvents (tank manufactured from stainless steel).
These Ultrasonic Cleaners have a 1 gallon capacity. Tube Cleaning Rack is plastic-coated to protect tubes. Available in a number of configurations, e.g. with 0-30 min timer and/or heater (thermostated for 60 °C) these units provide up to 100 watts output while drawing a maximum of just 1 A input power.

Capacity: 1 gallon (approximately 3.8 liters)
Tank D imensions: 9” x 5” x 6” deep
Outer D imensions: 10 1/2” x 6 1/2” x 11” high

 
NMR/EPR Tube Racks

 
Spinner Bearing NMR Tube Tester


 

Liquid Nitrogen Dewar Flask

Liquid nitrogen is an easily transported and economic source of coolant, whose boiling point is far below the freezing point of water without pressurization. This unique feature makes liquid nitrogen extremely useful for a wide range of applications in basic science research, such as cell cryopreservation, sample degasification by freeze-pump-thaw cycle and cold trap for experiments involving vacuum lines.
Wilmad, the world’s leading provider in NMR/EPR consumables and accessories, now has a high quality Liquid Nitrogen Dewar Flask to meet these applications.
Features:
• 30% cheaper than other manufacturers’ similar products.
• Unique metal base increases stability.
• Optional full length aluminum metal housing can further increase safety and reduce potential breakage.
• High vacuum minimizes liquid nitrogen loss during storage.


Combination pH Electrode
For use in 5 mm thin-walled NMR sample tubes up to 8” in length. Glass probe dimensions are 3 mm O.D. x 180 mm length.


 NMR Long Tip Transfer Pipets and Accessories

NMR Filters and Powder Funnel
Sample sedimentation may bring trouble to both shimming and spectrum quality. Use Wilmad’s special Bulb Filter to remove large particles. Two designs available: one with luer tip for stainless steel needle attachment, the other with glass tip. Both fit into all sizes of Wilmad NMR tubes. The sintered glass tip removes particles larger than 60 μm.

Wilmad’s Powder Funnel is designed to load large amounts of liquid reagents into NMR tubes. Tip fits into 5 mm thin-walled NMR or larger tubes.


 

Hamilton® Gas Tight Syringes (PTFE Luer Lock)
Wilmad offers PTFE Luer Lock syringes that best meet your NMR sampling needs.
These syringes handle air-sensitive and/or volatile samples with precise control over sample volumes.
Features:
• Gas and Liquid Tight.
• Reproducible (volumes to ± 1%).
• Made of inert borosilicate glass, PTFE, and stainless steel.
• Pressure tight to 200 psi.


 

Syringe Needles
The stainless steel needle is designed for septum punctures for air-sensitive sample.
The PTFE version in various sizes offer a convenient way to load and wash your sample in Small Volume NMR experiments.

 
Turbine Height Adjuster for Auto Sample-Changer
Wilmad offers a solution to save your valuable time in NMR Auto Sample-Changer turbine height adjustment.
Each adjuster has a set screw that lets you adjust the position of the turbine along the tube to match your instrument. Two versions are available for Bruker®, Varian® and JEOL® systems.

 
Vortex Plugs and Positioning Rods
Recommended for sample positioning inside the NMR tube.

 
Pressure Sensitive NMR/EPR Tube Labels
Wilmad’s Pressure Sensitive NMR Tube Labels are a handy alternative to marking tubes. Each label fits the circumference of the NMR tube precisely with no overlapping to guarantee sample tube’s symmetry in spinning experiment.

Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR

NMR核磁共振儀耗材
1. NMR Sample Tube選用對照表
2. Standard Consumables for Liquid-Phase NMR
3. Consumables for Liquid-Phase small Volume and External Reference NMR Studies
4. Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR
5. NMR Reference Solutions  
6. Accessories for Liquid-Phase NMR  
7. Consumables and Accessories for Solid-State NMR  

Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR
 
Constricted Vacuum Tube and Tip-Off Manifold
Constricted NMR tubes offer the most convenient way to flame-seal an air-sensitive sample. Simply apply vacuum to the tube using our Tip-Off Manifold, and then heat the constricted portion and twist off to seal the sample in tube. Order a constricted NMR tube by adding “CONS” to the product number of any Wilmad sample tube. Example: 507-PP-7CONS.
Unless otherwise specified, constrictions are placed 1 inch from top of tube. Order tubes that are 1 inch longer than your required finished length.

Tip-Off Manifolds
Chemical resistance of the manifold ports is excellent. The NMR tube will connect to a threaded aluminum bushing which is isolated from the vacuum by a Teflon high vacuum rotary valve with Viton O-rings. Rotating the valve will open and close the tube to the vacuum line.

 
Low Pressure/Vacuum Tube

Wilmad introduces a novel low pressure/vacuum (LPV) tube for both NMR and EPR experiments. A redesigned sealing surface eliminates leaks and greatly increases its lifetime when compared to traditional gastight tubes. Our low pressure/vacuum tube continues to offer a convenient flame-free sealing solution for air sensitive or volatile liquid samples at any pressure from vacuum to pressure slightly above 1 bar.

• 4X larger sealing surface increases lifetime and reliability.
• PTFE piston provides a 100% contamination-free seal.
• Axial symmetric design guarantees its application in spinning experiments.
• Spare glass tube can be purchased separately.
• Cheaper price reduces experimental costs.
• Standard sizes can be shipped within 1-2 business days after receipt of order.

 J. Young NMR Tubes
Wilmad continues to carry the J. Young Tube for your convenience. For better performance, please check our Low Pressure/Vacuum Tube on the previous page.

Simply attach the glass GVA-X adapter to a vacuum source, open the VNMR/X-PISTON valve by turning counterclockwise and evacuate your sample.
Close valve and place into your NMR spectrometer. Tubes can be kept under vacuum or moderate pressure for a considerable length of time. The system is straightforward and easy to use.


 

Screw-Cap NMR Tubes
The Screw Cap Tube is commonly used in sample degasification. The vacuum quality that it can maintain is >10-4 torr. For better vacuum, please check our Pressure/Vacuum Tube and Quick Pressure Valve Tube .
Each Screw-Cap Tube comes with one PTFE/Silicone septum.

Note 1: PTFE/Rubber Septum is a laminated disc consisting of a sheath of PTFE, which is bonded chemically to white pharmaceutical rubber. This septum is inert to most solvents and many corrosive materials but not recommended for multiple punctures.
Note 2: PTFE/Silicone Septum is a laminated disc consisting of a sheath of PTFE, which is bonded chemically to silicone rubber. This type of septum is inert to most organic solvents and compounds but poor to strongly corrosive materials. Remains reliable after multiple punctures.

 Quick Pressure Valve (QPV) NMR Sample Tubes

Wilmad’s Quick Pressure Valve Sample Tubes are specially
designed to simplify the work of NMR studies for catalysis, gas-liquid phase reactions, air sensitive samples and elevated temperature studies using low boiling point solvents.

Features:
• Easy to operate – one turn to open, one to close.
• Larger opening for convenient sample addition.
• Lightweight, concentric design for better performance.
• Offered with Wilmad Precision Tubes – thin, medium and heavy wall.
• Choice of Viton® or Kalrez® O-ring for different applications.
• Adapters available to both 1/16” and 1/8” tubing.

 Pressure/Vacuum NMR Tubes
Wilmad’s Pressure/Vacuum Tube is the most reliable NMR tube for medium range pressure (<300 psi) experiments in the market. It is designed to be connected to a 1/8” metal (stainless steel or brass) vacuum line using SwageLok® fittings or a rubber vacuum hose using a glass connector (OF-60). The PV-ANV valve is made of Teflon® and all other parts are made of Pyrex® or equivalent glass. Valve is opened simply by turning counterclockwise.

Omni-Fit NMR Tubes
Omni-Fit valve NMR tubes are designed for easy injection of chemicals through a gas-tight syringe for air sensitive samples without using a glove box. The Omni-Fit Tube consists of a 507-PP tube topped by a sturdy 2″ section of medium-walled tubing which supports the valve system.

Due to the nature of glass, Extreme Caution should be exercised when using at elevated or reduced pressures as performance of tubes under pressure or vacuum cannot be guaranteed. Adequate safety shielding should always be used when working in these conditions.

Consumables for Liquid-Phase small Volume and External Reference NMR Studies

NMR核磁共振儀耗材
1. NMR Sample Tube選用對照表  
2. Standard Consumables for Liquid-Phase NMR    
3. Consumables for Liquid-Phase small Volume and External Reference NMR Studies
4. Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR
5. NMR Reference Solutions
6. Accessories for Liquid-Phase NMR
7. Consumables and Accessories for Solid-State NMR 

Consumables for Liquid-Phase small Volume and External Reference NMR Studies
• Bruker® MicroProbe/MicroCryoProbe Sample Tubes
• Sample Tubes for Automatic Sample Changer and Bruker MATCH™ System
• Doty® Susceptibility Plugs (Shigemi Substitute)
• Doty® Plugs for 3mm Thin Wall Tubes
• Doty® Plugs for 5mm Thin Wall Tubes
• Doty® Plugs for 8mm Thin Wall Tubes
• Coaxial Inserts
• Stem Coaxial Inserts
• 5mm Micro Cell Assembly (use with small sample sizes in thin wall tube)
• Large Volume Microcell Inserts
• Pyrex® NMR Capillary Tubes
• PTFE Sleeve Adapter Sets for Coaxial Systems 

Bruker® MicroProbe/MicroCryoProbe Sample Tubes
(Stem Style, Upper O.D. = 5.0 mm, Length = 8 inch)
Wilmad has been manufacturing small volume NMR Tubes with the highest quality in the industry to meet the recent rising demand in small volume NMR. Our Ultra-High Field MicroProbe Tube (>600 MHz) is 10 times more precise in terms of camber and concentricity than instrument manufacturers’ stock tubes. This technological advancement helps increase the shimming quality and SNR. 

 

 


Sample Tubes for Automatic Sample Changer and Bruker® MATCH® System
(Length=4 inch)
Wilmad’s 4 inch (~102 mm) long Automatic Sample Changer Tubes are recommended for Bruker® MATCH® system, Varian® and Bruker® automation systems, which include but are not limited to: Varian® 768AS series, Bruker® B-ACS series and Bruker® SampleJet®. Capillary, Stem and Non-Stem versions are available depending on your NMR probe and auto-sample changer configuration. The capillary style tube does not come with SampleJet® Cap.

 

Varian® ColdProbe 2.5 mm O.D. Sample Tubes

 
Doty® Susceptibility Plugs (Shigemi® Substitute)
Match a wider range of solvents
• Less fragile in variable temperature experiments involving freeze-pump-thaw
• Use with Wilmad’s 3 mm, 5 mm or 8 mm thin wall tubes
• Easy sample loading and cleaning
• Fully compatible with Bruker®, Varian® and JEOL® NMR spectrometer/probe 

 

 

Tips for Using Susceptibility Plugs
• Determine the sample solvent. For easier bubble removal and use with viscous samples/solvents, plugs with vent grooves
along the outer surface (product numbers with a “V”) should be used.
• Select plug material-closest match of magnetic susceptibility constants.
• Check chemical resistance compatibility with sample/solvent.
• Store Doty Plugs in deuterated solvent to suppress water absorption.
• Determine plug length using the depth gauge. Ideally, the plugs should not protrude into the Rf Coil limit.
• Susceptibility constants of rod/collar are inconsequential. Rod/collar material selection is based on chemical resistance.
G-10 rods are more rigid and easier to use; Kel-F® rods are recommended for use with organic solvents. 

 

 

 

 

 
5mm Micro Cell Assembly (use with small sample sizes in thin wall tube)
• Sample volume could be as little as 18 μL.
• Three different inserts with various shapes (Spherical Bulb, Capillary Tube, Cylindrical Bulb).
• Outer tube (Wilmad Precision Thin-Walled Tube) must be ordered separately depending on magnetic field strength.
• Not recommended for variable temperature experiment.
• Use Wilmad Teflon Needles (P/N: 90630) with syringe to fill and clean sample.

 


Large Volume Microcell Insert
 

 

Pyrex® NMR Capillary Tubes 


PTFE Sleeve Adapter Sets for Coaxial Systems
 

 

Our exclusive PTFE Sleeve Adapter Sets allow you to utilize the tubes already in your lab.
Two supports are included with each adapter set. The upper support’s flange lets it rest on top of the outer tube. The lower support fits snugly into the outer tube with flats cut in the side to allow air out during insertion. Position the other to support the lower half of the inner tube and keep it out of the probe’s Rfcoil. They also permit the use of standard caps for many of the tubes. A cap for the outer tube is not needed; the upper support plugs the top.
Create your own unusual coaxial sets. For example, hold the outer (annular) volume constant while changing the inner volume. Just use inner tubes of the same OD but different wall thickness.
Tubes sold separately. 

Note:Do not use PTFE Sleeve Adapter Sets in variable temperature studies. Since PTFE expands and contracts much faster than glass, the fit of the adapters can be assured only at room temperature. 

 

核磁共振儀耗材 Standard Consumables for Liquid-Phase NMR

NMR核磁共振儀耗材
1. NMR Sample Tube選用對照表
2. Standard Consumables for Liquid-Phase NMR
3. Consumables for Liquid-Phase small Volume and External Reference NMR Studies
4. Gas-Tight Consumables for Liquid-Phase and Gas-Phase NMR
5. NMR Reference Solutions
6. Accessories for Liquid-Phase NMR
7. Consumables and Accessories for Solid-State NMR  

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
(Inches) 
Tolerance (mm)  MHz  Wall Thickness 
WG-3000-3-50  2.95±0.03 OD  High-Throughput  .27±0.03 mm 
WG-3000-4-50  2.95±0.03 OD  High-Throughput  .27±0.03 mm 
WG-3000-7-50  2.95±0.03 OD  High-Throughput  .27±0.03 mm 
WG-3000-8-50  2.95±0.03 OD  High-Throughput  .27±0.03 mm 
    3mm Caps     
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.  

Special Alert:
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
(inches) 
O.D. (mm)  Wall
Thickness
(mm) 
Pkg
Qty
 
WG-1000-7-50PK  High-Throughput  4.94665±0.01905  .43  50 
WG-1000-8-50PK  High-Throughput  4.94665±0.01905  .43  50 
WG-1000-7  High-Throughput  4.94665±0.01905  .43  100 
WG-1000-8  High-Throughput  4.94665±0.01905  .43  100 
 

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
Thickness
(mm) 
WG-5MM-ECONOMY-7  100  4.94665±0.01905  .43 
WG-5MM-ECONOMY-8  100  4.94665±0.01905  .43 
WG-5MM-ECONOMY-9  100  4.94665±0.01905  .43 
 

WG-12XX Series Economy NMR Tubes Sandblasted with the product number and a marking spot.  Caps included.
 
 
 
 

 

Product
Number 
MHz
Rating 
Length
(inch) 
O.D.
(mm) 
Wall
Thickness
(mm) 
Concentricity
(microns) 
Camber
(microns) 
WG-1242-7  700  4.94665±0.01905  0.43  2.5  3.8 
WG-1242-8  700  4.94665±0.01905  0.43  2.5  3.8 
WG-1241-7  600  4.94665±0.01905  0.43  3.8  3.8 
WG-1241-8  600  4.94665±0.01905  0.43  3.8  3.8 
WG-1235-7  500  4.94665±0.01905  0.43  13 
WG-1235-8  500  4.94665±0.01905  0.43  13 
WG-1228-7  400  4.94665±0.01905  0.43  25  13 
WG-1228-8  400  4.94665±0.01905  0.43  25  13 
WG-1226-7  300  4.94665±0.01905  0.43  51  13 
WG-1226-8  300  4.94665±0.01905  0.43  51  13 
WG-1208-7  200  4.94665±0.01905  0.43  51  25 
WG-1208-8  200  4.94665±0.01905  0.43  51  25 
WG-1206-7  >100  4.94665±0.01905  0.43  51  50 
WG-1206-8  >100  4.94665±0.01905  0.43  51  50 


3 mm to 30 mm OD Precision NMR Sample Tubes
 
 
詳細下面各項規格請見 
• 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 NMR Tubes  
 
 

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
NMR studies.
• Quartz has 2 times less dielectric constant than Pyrex® glass, which helps to improve the quality factor.
  
  5 mm O.D. Precision NMR Tubes | Thin Walled | Quartz (Natural Quartz)  
 
10 mm O.D. Precision NMR Tubes | Thin Walled | Quartz (Natural Quartz)
 
 

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.  
 

 

       5 mm O.D. Precision NMR Tubes | Thin Walled | Suprasil   

        10 mm O.D. Precision NMR Tubes | Thin Walled | Suprasil   
 

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.  


 

 Septa, NMR, White Rubber 

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.

Product Number  Description 
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 

 PTFE-FEP Tube Liners for Corrosive Samples and 29Si NMR    

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.  

      PTFE-FEP NMR Tube Liners for Corrosive Sample    

   
PTFE-FEP NMR Tube Kit for 29Si NMR
 
  


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.

  


Flat Bottom NMR Tube