The Trans–Blot SD semi–dry transfer cell allows fast, efficient, and economical blotting. Using a platinum–coated titanium plate as the anode and a stainless–steel plate as the cathode, the Trans–Blot SD cell transfers in a horizontal configuration without a buffer tank or gel cassettes. Faster, More Efficient Transfers Because the plate electrodes are positioned directly against the filter paper stack, the field strength across the gel is maximized for faster, more efficient transfers. Transfers can be accomplished in 15–30 minutes for mini gels and 30–60 minutes for full–size gels. Minimal Buffer Requirements Only 200 ml of buffer is needed for a transfer, just enough to wet the filter papers, which serve as ion reservoirs. Reagent cost and preparation time are significantly reduced. Platinum Plate Electrodes Provide Consistent and Reliable Transfers The plate electrodes of the Trans–Blot SD cell transfer proteins quickly, efficiently, and evenly, with a uniform electrical field. Since neither platinum nor stainless steel breaks down or changes its conductive properties with repeated use, constant replacement of spent electrodes is not necessary.