Re: [DIYbio] Non-Platinum Electrophoresis Electrodes That Don't Degrade

On 05/26/2013 10:34 PM, Josiah Zayner wrote:
> Graphite rods look like an ok solution but seem complicated
> to attach and use

How about O-ring seals in a gel box wall. Then connectors and metals
are all outside the box. Perhaps a water tight cord grip for electric power cords
would be an expedient DIY method of constructing such a gel box feed through for
a graphite rod. The other end of the rod could go to a hole that only goes half
way through the gel box to support the rod end so it's not along lever
that could let it get broken easily. For an open hardware product, a simple
turned shape attached by screws could clamp against an O-ring in its
groove to seal the rod.

On 05/26/2013 11:44 PM, Dakota Hamill wrote:wouldn't it be just as, if
> not more cost effective to go with
> platinum wire?
>

Sure, but it only benefits one at a time DIY expedience. More effort is worth
it if you can develop open hardware to share, especially if it results
in ease of use, long useful life, cleanable, rebuildable, etc.

For circuit printing, there are carbon inks that cure with heat.
What if one wall of a gel box was printed with in a big rectangle
of conductive carbon "ink" that goes above the gel height?
Wonder if it would last like pure carbon rods?

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