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Roller Drums for tissue culture; a question of rotation speed
I just wanted to let people know what I finally did with regard to a
roller drum. I went into my attic where, low and behold, I found an assortment of antique and very eBay-able turntables for those old fashion records that many of you youngsters have never seen. I actually have three of them that go back to my childhood up there. I picked the Panasonic turn table with the built in 8 track player and using a drill and some screws fashioned the spinning part to hold two 16 flask holders. Setting at an angle it spins them quite well at 45 rpms. I can load this contraption with about 10 flasks before it starts to sound like it is working too hard and needs to be switched to 78 rmps. Good enough to experiment with. The hardest part was disabling the auto changer and automatic needle arm. I had to go into the box and remove a gear in order to prevent all chance that it would decide to "change records" when I turned my back. I have attached a lamp for illumination, and when I want to get really silly I have some old speakers in the attic too, as well as a box of 8-track tapes. (If they still play I will be amazed. There must be some organism that eats magnetic tape) I probably could have sold the turn-table/8 track tape combo box on eBay and bought a new roller drum. :-) Anyway, thanks for the input... |
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