How much are nmr tubes

It is possible to select NMR tubes from a huge variety of qualities, with an equally significant difference in price between the cheapest and the most expensive.

They are rated according to many parameters and not in a conventional way—but what is the difference between these different NMR tubes? How varied is the effect on the quality of the spectra and how do you know the right tube to pick for your experimental requirements? Solution: Historically, it had been the norm to pick tubes based on factors such as thickness, concentricity, and camber. However, the key to purchasing the right NMR tube for your needs is to keep focused on the application being carried out and pick the most suitable tube for your application.

A shift in thinking is needed to start with the application and system configuration rather than with the tube properties. The industry is supporting this focus on application and experimental need by offering a service to scientists that helps them to determine the most appropriate tubes rather than simply offering the tubes by properties alone. Attached polyethylene caps Sandblasted marking spot OD 4.

Related Products: 5mm Nmr Tubes. Related Products: 5mm Glass Tube. Synonyms: Shigemi nmr tubes; nmr sample tubes; nmr tubes. Tube comes complete with open top screw cap and septum. Caps and septa can be ordered separately. The new 4" version is…. All tubes are supplied with end caps.

Eliminates tube cleaning, allowing more time…. Related Products: Swagelok Fittings. Precision adapter holds 3 mm, 4 mm, and 4. Does not include spinner turbine. Tight ID and OD tolerance as small as 0. Related Products: Nmr Tube.

Related Products: Nmr Tubes 10 Mm. Become a Thomas Insider! Review Us on Google. Don't have a web profile? Create one now. Log In or Create a Profile. Check Out. This page covers a variety of considerations for good preparation of NMR samples. All users must supply their own NMR tubes and solvents. Purchase of tubes and solvents is discussed below. This tutorial covers the basic preparation for most small-molecule organic compounds. Additional preparation procedures for large molecules, polymers, biomolecules, inorganic molecules, etc.

Info for Use the proper amount of material. Typical 13 C spectra require mg of material. This amount of material will allow you to obtain a 1 H spectrum in a few minutes or a 13 C spectrum in minutes. When the amount of material is doubled, the resultant signal will be doubled. Bear in mind that a very concentrated sample will produce a quick 13 C spectrum, but may result in a broadened 1 H lineshape.

Overly concentrated samples can also be difficult to shim. For larger molecules and polymers , the amount of material needed may be significantly greater. Please consult literature associated with your molecule of interest for advice regarding sample concentration in these situations. Broad lines regardless? Very viscous samples or samples that contain paramagetic ions even in small quantities can produce broad spectral lines.