Why does one brand of NMR tubes fit differently into my spinner turbine(s) than another brand?
Some brands have OD inconsistencies, especially disposable tubes. Norell’s manufacturing process minimizes tube to tube OD variation. Spinner turbines can also be worn out and need replacing or can have worn out o-ring’s. Spinner turbines also vary considerably in bore ID, since they are not manufactured as precise as glass NMR tubes.
