Great for quickly measuring and dispensing your liquid plant food and supplements! One pump dispenses 1 ounce of liquid., 740040 is designed specifically to attach to a standard one gallon bottle (not included). 740042 is designed specifically to attach to a standard 2.5 gallon bottle (not included). Threaded body disassembles for quick and sanitary cleaning. Constructed from polypropylene and stainless steel for maximum chemical compatibility.