Tag Archives: Accessories

EPR電子順磁共振儀耗材 Variable Temperature Accessories

EPR電子順磁共振儀耗材
Impurity Analyses – Clear Fused Quartz (CFQ) vs. Suprasil (Synthetic Quartz)     
EPR Sample Tubes and Accessories    
EPR Cells    
Dewar Inserts   
Dewar Flasks (Cold-Finger Dewars)     
‧ Variable Temperature Accessories  
Electrolytic Cells for EPR     
Miscellaneous EPR Supplies     

Variable Temperature Accessories
Replacement Parts for VT Systems

Need a replacement component for your variable temperature system?
Since Wilmad offers VT replacement components at prices significantly lower than the Original Equipment Manufacturer (OEM), why pay more? Wilmad components are equivalent or, in some cases, better in quality than you get from your EPR Spectrometer manufacturer.

You’ll get the best performance possible with Wilmad transfer dewars. Most are silvered for maximum thermal insulation. Where it has been possible, Wilmad transfer dewars are fully vacuum-jacketed, right to the end of socket and ball joints, so you get the most stable temperatures.
Bruker VT Transfer Dewar
The Bruker ER 4121 VT Variable Temperature System includes a long transfer dewar and a heater that goes inside it. The diameter and length of the heater and the transfer dewar has varied over the years, so choosing the right size dewar for your system was a real challenge.
Wilmad has made replacing the transfer dewar simple, though. Working closely with Bruker, we’ve developed two designs which work with all Bruker VT systems. The long version, WG-842-MX, works with all Bruker EPR spectrometers with magnets > 18 cm diameter. The shorter one works with all smaller magnets.

Wilmad’s versions of these transfer dewars are better than Bruker’s. We add a hollow ball joint for better thermal stability.

Only Wilmad makes a replacement for Varian’s E-257 Immersion Transfer Dewar!

Fully compatible with Varian’s E-257 VT System, this Immersion Transfer Dewar, Wilmad’s product number WG-760, incorporates a Kovar flange that fits the heat exchanger. It works better than the original transfer dewar of your VT System because it connects to the elbow transfer dewar through a jacketed socket.

This Elbow Transfer Dewar is better than the original you got from Varian!

You’ll get better performance with Wilmad’s WG-840 series of Elbow Transfer Dewars. That’s because we’ve redesigned the dewar to include a jacketed ball joint, so your cold carrier gas stays cold! No frosting!

It’s made with hooks that let you firmly hold the ball in the socket of the immersion transfer dewar (Wilmad’s product number WG-760) with springs.

You won’t need to rearrange your laboratory, either. Wilmad’s Elbow Transfer Dewars are available in three lengths, so you can choose the one that’s best for your setup. Call us for custom lengths.

Our special transfer dewar makes your VT setup more versatile!

Is the height of your replacement or new Nitrogen Evaporator Dewar too high or short for your VT setup? No problem. Wilmad has a solution. Our Bridge Transfer Dewar, WG-843, makes adjusting the flow path of your VT carrier gas easy!

Ideal for Bruker VT systems. Just turn the Evaporator Dewar Head around, place the Bridge Transfer Dewar between your long transfer and the Evaporator Dewar, and you cover the new angle.

This special transfer dewar can save you money and headaches. No custom manufacturing charges for a specially designed replacement part.

NOTE: While most EPR glassware is made from quartz, a few variable temperature components are actually made from Pyrex. Please note the material when ordering.

 

EPR 電子順磁共振儀耗材 EPR Sample Tubes and Accessories

EPR電子順磁共振儀耗材
Impurity Analyses – Clear Fused Quartz (CFQ) vs. Suprasil (Synthetic Quartz)         
• EPR Sample Tubes and Accessories         
EPR Cells     
Dewar Inserts  
Dewar Flasks (Cold-Finger Dewars)   
Variable Temperature Accessories   
Electrolytic Cells for EPR    
Miscellaneous EPR Supplies   

EPR Sample Tubes and Accessories 
• EPR Sample Tubes – Quartz (CFQ)  
• EPR Sample Tubes – Suprasil  
• EPR Graded Seal Sample Tubes  
• Valved and Screw-Cap EPR Tubes  
• Capillary EPR Tubes  
• Special EPR Sample Tubes

EPR Sample Tubes – Quartz (CFQ)
Important Note: Product numbers that include “PQ” belong to our Precision Tube Family with an OD and ID tolerance of ±0.013 mm. Those with “SQ” are not Precision and their OD and ID may vary as much as ±0.4 mm. For EPR experiments that must estimate electron spin density and/or produce highly repeatable signal amplitude between different runs we strongly recommend our Precision EPR Tube.

Save Time Heat-Sealing EPR Samples!
Heat-sealing quartz tubes is difficult enough so we’ve provided an easier way. By ordering our constricted tube you’ll seal EPR tubes more quickly, with less effort. Choose your tube, add the suffix “CONS” to the product number and remember to order 1 inch longer than required.
• Quartz (CFQ) EPR Tubes – 2mm OD
• Quartz (CFQ) EPR Tubes – 3mm OD
• Quartz (CFQ) EPR Tubes – 4mm OD
• Quartz (CFQ) EPR Tubes – 5mm OD
• Quartz (CFQ) EPR Tubes – 10mm OD

Quartz (CFQ) EPR Tubes – 2mm OD

Quartz (CFQ) EPR Tubes – 3mm OD

Quartz (CFQ) EPR Tubes – 4mm OD

Quartz (CFQ) EPR Tubes – 5mm OD

Quartz (CFQ) EPR Tubes – 10mm OD

 ***Special Note: This item not recommended for contemporary EPR****
EPR Sample Tubes – Suprasil
Important Note: Product numbers that include “PQ” belong to our Precision Tube Family with an OD and ID tolerance of ±0.013 mm. Those with “SQ” are not Precision and their OD and ID may vary as much as ±0.4 mm. For EPR experiments that must estimate electron spin density and/or produce highly repeatable signal amplitude between different runs we strongly recommend our Precision EPR Tube.

Save Time Heat-Sealing EPR Samples!
Heat-sealing quartz tubes is difficult enough so we’ve provided an easier way. By ordering our constricted tube you’ll seal EPR tubes more quickly, with less effort. Choose your tube, add the suffix “CONS” to the product number and remember to order 1 inch longer than required.
• Suprasil EPR Tubes – 2mm OD
• Suprasil EPR Tubes – 3mm OD
• Suprasil EPR Tubes – 4mm OD
• Suprasil EPR Tubes – 5mm OD
• Suprasil EPR Tubes – 10mm OD

Suprasil EPR Tubes – 2mm OD

Suprasil EPR Tubes – 3mm OD

Suprasil EPR Tubes – 4mm OD

Suprasil EPR Tubes – 5mm OD

Suprasil EPR Tubes – 10mm OD

EPR Graded Seal Sample Tubes

Need to seal an EPR tube to your vacuum rack?
Some EPR samples are air-sensitive. Since oxygen is paramagnetic, many EPR samples are best studied after degassing. For long-term storage, no other closure is better, but most vacuum racks incorporate Pyrex components. Sealing quartz to Pyrex is a problem, unless you use sample tubes that incorporate a graded seal. Order Wilmad’s Graded Seal/Constricted EPR Tubes, available in a variety of sizes. Other configurations can be prepared, so if you don’t see the size you need, contact us about price and availabiility

Valved and Screw-Cap EPR Tubes
• J. Young EPR Sample Tubes, Valves and Pistons
• Screw Cap EPR Sample Tubes

J. Young EPR Sample Tubes, Valves and Pistons

Wilmad’s J. Young valved sample tubes make difficult samples easy to study. No wonder they’ve become so popular in NMR. Now, you get the same advantages in EPR studies!

It’s a real bargain, too! One tube handles:

 • air-sensitive samples
 • degassed samples
 • catalytic studies
 • gaseous samples
 • volatile samples

The J. Young Valve EPR Tube saves time. No greasy joints to fuss with. Connect it quickly to your vacuum rack. Opens and closes with a quick twist of the wrist. We can add the valve atop any Wilmad EPR sample tube 5mm OD or larger. A graded seal is used to connect the Pyrex portion of the valve to a quartz EPR tube. Two sizes of the valve are available. One is ideal for 5mm tubes, the other for 10mm tubes. One is right for most every EPR sample tube you get from Wilmad.

Replacement pistons and vacuum adapters are sold separately. If you should break the tube, but not the thread, it can be repaired at a cost that’s lower than a new one.

J. Young Valves and Pistons

Screw Cap EPR Sample Tubes

Now, sample tube and storage vial have been joined!
Save time and money with the Screw Cap EPR Tube; each come with a PTFE/Silicone Septum.

Quartz (CFQ) Screw Cap EPR Tubes

Suprasil Screw Cap EPR Tubes

Replacement Septa and Caps

*PTFE/Rubber – Laminated discs consisting of a sheath of Teflon®bonded chemically to white pharmaceutical rubber. Inert to most solvents and many corrosives. Not recommended for multiple punctures.

PTFE/Silicone – Laminated discs consisting of a Teflon®sheath bonded chemically to silicone rubber. Inert to most organic solvents and compounds; however, not recommmended for use with strongly corrosive materials. Resealability properties of silicone rubber are excellent.

Capillary EPR Tubes
• Capillary Tubes for JEOL Spectrometers
• Quartz and Suprasil Capillary Tubes

Capillary Tubes for JEOL Spectrometers

Recommended for use when small aqueous samples are studied using JEOL’s standard TE011cylindrical cavity resonator, these sample “cells” are more durable and easier to handle because of their heavy wall construction (OD = 4.0mm). Made from the highest quality synthetic Suprasil quartz, these capillary cells provide excellent performance at temperatures from 5 to 100°C. You’ll find these cells are fully compatible with JEOL’s tube caps and collet for 4mm OD tubes.

These JEOL capillary sample tubes are used with collet adapters. Collets not included. They are available here:

NOTE: Wilmad does not offer tubes for dosimetry. Please contact the manufacturer of your dosimeter for information about these special sample tubes.

Quartz and Suprasil Capillary Tubes

Conveniently packaged in vials of 25, 50, and 75 pieces, Wilmad Clear Fused Quartz and Suprasil capillary tubes are often used in EPR applications where sample sizes are limited. Available in sizes from 0.40 to 2.4mm OD, these fine tubes are 100mm long and open on both ends. Easy to seal with a hot flame, you can use them with a round bottom or close with a sealant of your choice (beeswax is commonly used.)
Clear Fused Quartz Capillary Tubes

Suprasil Capillary Tubes

NOTE: Wilmad does not offer tubes for dosimetry. Please contact the manufacturer of your dosimeter for information about these special sample tubes.

Special EPR Sample Tubes

High Temperature Sample Tube for Bruker ER4114HT Dewar Insert

Only by making a tapered joint seal with the Dewar Insert is it possible to achieve the highest temperatures with Dewar Insert for Bruker’s ER4114HT Cavity Resonator. Wilmad makes a unique sample tube for use with this special dewar insert. Consisting of a 6mm OD tube that tapers to a 4mm OD below a7/15 inner joint, this tube is prepared with CFQ.

Consumables and Accessories for Solid-State 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

Consumables and Accessories for Solid-State NMR

Rotors and Caps for Bruker®, Varian® and Doty® MAS-NMR
Zirconia MAS Rotors and Caps
Manufactured from the highest purity Zirconia, Wilmad’s MAS Rotors provide the NMR
spectroscopist with the ultimate alternative for analysis of solid samples. The need to solvate solid samples is eliminated. They are available for most current solid state NMR spectrometers.
Wilmad MAS Rotors are carefully examined for material irregularities by optical methods before and after the precision machining process. Without overspinning, each rotor is spin tested to only the highest specified spinning speed. High precision (which becomes a necessity for proper spinning performance) is maintained in the manufacture of the end caps. Most end caps are fitted with O-rings for better sealing. Some caps have axial holes for venting.

Advantages of Zirconia Rotors
• Most homogeneous ceramic material
• Wilmad’s Zirconia Rotor Body has higher strength (1,000 MPa, greater than Si3N4)
• Highest spinning speed (up to 12 kHz for 7 mm O.D. rotors)
• High precision superior finish (0.05 μm mirror gloss)

                                     Properties of Rotor and Cap Materials

                               Rotor and Cap for Doty® MAS Probe

                                     Rotor and Cap for Bruker® MAS Probe

                              Rotor and Cap for Bruker® MAS Probe (continued)

For Operating Caps: No special tools are needed to put in or take out of rotor. They should NOT be pressed in as this may damage the O-ring. Ensuring the cap shaft and the rotor are aligned, cap should be screwed in; when the cap is in completely it should be turned back slightly (approximately 1/4 turn). Remove in the same fashion.

                            Rotor and Cap for Varian® Jakobsen MAS Probe

 

Pyrex MAS Rotor Inserts
Our Pyrex® MAS Rotor Inserts are designed for air-sensitive samples and semi-solid samples such as gels or highly viscous liquids. Sample can be sealed into the insert tube by heat-sealing with a torch or applying a small drop of epoxy (we recommend E-6000® Jewelry and Craft Adhesive) to the constricted part as shown below. After the epoxy is set and dry (24 hours) the sealed insert is cut through the constriction with a glass saw.
Using a small funnel (p/n 815), powder samples can be packed into the insert. Gelatinous samples can be warmed and transferred to the insert using a syringe.
Note: A glove box may be needed for the sealing of air-sensitive samples.

 


Pyrex Tubes for Varian NanoProbes
Wilmad’s Tubes for Varian® NanoProbe are constructed of Pyrex® glass for NMR analysis of
solids and semi-solids. This product is specially machined at close tolerances which allows the
tube to operate at around 2.5 kHz rotating speed.
Features:
• Each cap has an axial hole for venting air from the tube.
• A small screw plug is optional for closing the hole in experiments to prevent evaporation and
/or spill.
• Air-tight O-ring seals are optional on caps and plugs.
• Three Volumes are available:
110 μl – each consisting of a Pyrex® tube and a cap (Ertalyte or Kel-F®)
60 μl and 40 μl – each consisting of a Pyrex® tube, a cap and a plug (Ertalyte or Kel-F®)
Overall Size – 4 mm O.D. x 22.5 mm Length

                                        Properties of Cap and Plug Materials

                                            Non-GHX type Varian® NanoProbe

                                              GHX type Varian® NanoProbe


Stainless Steel Micro-Spatula
Getting a tiny powder sample into any tube larger than 4 mm O.D. tube should never be a struggle again. Unlike ordinary spatulas, Wilmad’s Stainless Steel NMR Spatula fits into the most common NMR tubes. Add or remove samples easily, (including freeze-dried); scoop samples with the round end or pry stiff samples with the sharp edged flat end.

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.