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Looking at some of these designs I would like to offer up another idea.
Why not use a test with a single hole rubber stopper. The insert a glass tube into the hole. Invert the whole thing and your done.
I was looking around and you can buy these parts for < $5.
The only question I have is the effect the rubber stopper would have on the solution.
Comments?
Why not use a test with a single hole rubber stopper. The insert a glass tube into the hole. Invert the whole thing and your done.
I was looking around and you can buy these parts for < $5.
The only question I have is the effect the rubber stopper would have on the solution.
Comments?