Welcome to FreeB Economy Instrumentation for the Physiology Lab
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FreeB is a collection of simple designs for recording chambers, electrode modifications, stimulating probes, and other peripheral devices for the physiology and neurobiology laboratory.  They range in design originality from vaguely clever to "well . . duh!".  At any rate, they are comparatively inexpensive to build, in many cases effectively replace or significantly enhance more expensive commercially available alternatives, and are not overtly dangerous to use.  Descriptions, rough construction guides, and parts lists are under development for this site and/or free upon request.   The FreeB List             Suction Electrode Tip   construction ~$0.25 x  20 minutes         Nerve Stimulating Probe     construction ~$12 x  45 minutes          Wand Electrode    construction ~$1 x  10 minutes         Electric Fish Chamber    construction ~$4 x  45 minutes           Ussing Chamber    construction ~$20 x  3 hours         Sciatic Nerve Chamber     construction ~$15 x  2 hours          Crayfish EOG Chamber    construction ~$15 x  2 hours         EOG Photic Trigger     construction ~$10 x  1 hour            Insect Video Monitoring    construction ~$60 x  10 minutes              Turtle Heart Clip     construction ~$.02 x  2 minutes           Collapsible Faraday Cage    construction ~$30 x  3 hours