Abstract: The common hemoglobin variants A, A.sub.2, F, S, and C are discretely separated by electrochromatography under acidic conditions on an agar gel which utilizes an agar gel having a wet thickness of from about 0.1 to about 0.5 mm. and a potential of from about 60 to about 110 volts. The gel buffer is a citrate buffer having a citrate concentration of from about 0.04 to about 0.065 M and a pH of from about 6.0 to about 6.5. The well buffer is a citrate buffer having a citrate concentration of from about 0.055 to about 0.065 M and a pH of from about 6.0 to about 6.5.

Abstract: A switching apparatus to be substituted in a conventional wiring system of a building for the on-off switch of a conventional light such as a porch light for causing the light to flash on and off, the switching apparatus including a flasher wafer which is switched into and out of the circuit for the light and which flasher wafer is confined in an open and unobstructed pocket within the switch housing so as to be readily inserted and removed for replacement, the switch toggle being translucent and illuminated in synchronism with the flashing produced by the flasher wafer.

Abstract: A flasher controller comprised of two integrating circuits, one functioning as a pulse width modulator and the other as a free running 50% duty cycle oscillator which in combination drive on a selective basis the base of one of two transistors in accordance with a pulsed voltage of predetermined frequency: the emitter of one transistor and the collector of the other are each connected to energize the solenoid of the power relay connected in series in a pre-existing automotive lamp circuit and thereby alternately open and close that circuit in accordance with the said pulsed voltage.

Abstract: Solidified, polar, micorbial growth medium containing 8-anilino-1-naphthalenesulfonic acid or a salt thereof. Microbial colonies grown on the medium can be detected fluorimetrically.