Hi Tom,

Try using a small teflon capillary - the really narrow ones can be attached on the needle and can get easily all of the sample out of the NMR tube.

Regards

David

Thats a good idea! Now to try and find some capillary tubing

I did it in the past with a syringe with a very long disposable needle (epidural needle with high gauge)+ rinsing too (be carefull, readily pops out of the tube).

If you have the adapters, try some HPLC tubing on your syringe.

Idex Health and Science part # P-659 is a female Luer to 10-32 (HPLC fitting) adapter. You may be able to "stack" other adapters you may have to do the same thing.

See: https://www.idex-hs.com/luer-adapter-10-32-female-to-female-luer-peek.html

If you have a Bunsen burner you can gently extend a glass pipette by heating at the point where it narrows and pulling. Sometimes we add methanol to the sample to reduce the surface tension, making it easier to just pour the sample out.

If you do not have or want to use a Bunsen burner then you can buy long tipped glass pipettes from Wilmad. http://www.wilmad-labglass.com/Products/803A/

What I suggest  is to get some PE Pasteur pipettes (the cheap disposable ones made of plastic) and extend the "capillary" part of the pipette by just stretching it, using a pincer or maybe robust tweezers. We normally use this for our radioactive samples, as this method does not require a Bunsen burner, it is cheap and the pipettes can easily be disposed.

The long-tipped glass pipette tip is our standard go to solution.  The Teflon capillary attached to a syringe (answer #2)  is also an excellent route that gives you the greatest control.

I usually use the method suggested by Phillip Van der Peet, using an extended Pasteur pipette and it works well

Use a Hamilton siringe with a long needle.

I have good results by adding some methanol in the tube (0.2-0.3 ml) without shaking, then the solution flows out easily from the tube. Obviously your sample should be compatible with this solvent to use this method. 

You can use pasteur capillary tube.