QuantumDot2,
@QuantumDot2@mas.to avatar

Any VT-NMR experts here? I’m having trouble with losing my lock signal in DMSO above 35 ºC. Using a regular NMR tube w/ septum on top. No spinning.

We're using a Bruker Fourier 300, quite a basic NMR, which is often fiddly to lock anyway (lock is slow, flock is fast but erratic - TopSpin 3.x)

Any tips? Narrower tubes? Leave it unlocked? (Expt only takes about 3 mins - gradshim at each temp) Thx!

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