Abstract: A micro-organism culture bottle is molded of a high strength, high transparency, high temperature plastic which exhibits low permeability to oxygen and carbon dioxide and which is chemically inert to the substances intended to be used therewith. The neck of the bottle is asymmetrically positioned on the front face of the bottle to be located below the liquid level line when the bottle is operational to permit an in situ subculture extraction. A pair of substantially identical electrodes are supported from the rear wall of the bottle and extend parallel to the bottom of the bottle in a position to be also totally below the liquid level line. A frosted area on the front face of the bottle is provided upon which pertinent data may be written.