We had our machine shop make a groove 1 inch long x 3/16 deep along the
shaft of the spinner to remove some weigth. This has helped a lot.
Occasionally we need to increase the vt flow to eject a sample.
Eugenio Alvarado
NMR Facility Co-Director
Chemistry Department, Room 3500
University of Michigan
On Sep 1, 2016 2:25 PM, "Rajan Paranji" <rajanp_at_uw.edu> wrote:
> Dear All
>
> I am pretty sure I am not the only one in Spinland that suffer from
> this. The J-Young tubes that is used mostly by small molecule chemists,
> repeatedly get stuck inside the magnet and a normal eject operation by the
> user doesn't dislodge the tube. I have set a rule here not to spin these
> sample tubes since they have a noticeable wobble due to the dumbbell shape
> afforded by the spinner as well as the plastic seal that keeps the
> atmosphere inside the tube in tact.
>
> The remedy I use include, increasing of Lift Air flow to max,
> increasing of VT air flow in combination with Lift Air flow and the last
> resort, pulling the probehead out and use a plexiglass rod concoction we
> have made (that has a funnel shape at the tip to cup around the tube
> bottom) to push the tube out of the magnet.
>
> Is there any other wizardry out there that this venerable group can
> share with me that I can use to make my life easier ? Personally I have
> already sustained a casualty once, while using the plexiglass rod, when
> the same slipped and fell and landed on my left eye (I was lying down under
> the magnet, guiding the rod through), causing a corneal tear.
>
> Hope you guys didn't have to suffer any such mishap.
>
> Thank you as always.
>
> Best Regards
>
> Rajan
>
> --
>
> ____________________________________
>
> Rajan K Paranji, Ph.D.NMR Facility Manager
> *Department of Chemistry**Room 65, Bagley Hall*
> University of WashingtonSeattle, WA 98195
> phone : 206 685 2581 fax: 206 685 8665email: rajanp_at_uw.edu
> ____________________________________
>
>
Received on Thu Sep 01 2016 - 13:36:02 MST