Designed to pump 1 or 2 ounces (30 or 60 milliliters) of detergent, sanitizer, or other chemical into kitchen sink, bottle, dry cleaning machine, or any open container where chemical is mixed with water. Each push delivers 1 or 2 ounces with the pump automatically maintaining its prime for future use. Polypropylene body and polyethylene bellows for chemical resistance. Epdm, silicone, or viton seals available on check valves. Chemical does not come in contact with spring. Mounts on any vertical or horizontal surface.