Abstract: The device for collecting blood specimens by venipuncture for laboratory tests consists of a hollow support fitted with a double-ended needle at one end and a vial with a plunger that can be fitted into and removed from the cavity in the support, the vial being sealed at one end by a pierceable membrane. In a preferred embodiment a mechanical system for automatic operation of the plunger is also envisaged. The double-ended needle consists of an active needle that enters the vein, positioned eccentrically to the axis of the support, and a passive needle that punctures the vial membrane eccentrically.

Abstract: A planar rigid support for electrophoresis comprising a cellulose acetate strip or the like can bear on two fixed highly spongy plates which are placed in the electrolytic bath so as to emerge from the upper level thereof. In particular, the support may comprise a resilient strip-holder, in which the fastening occurs by providing in the strip two series of holes which are inserted in stakes provided on two opposite sides of the strip-holder. The several steps for the analysis of total and fractional proteins are obtained displacing each support and other fittings by a handling means preferably provided with magnetic pliers cooperating with iron portions provided on each support or fitting to be handled.