A professional who operates flotation machine to remove germs (embryos) from cracked grain, and tests product to ensure conformance with standards. Respnsibilities include:

• Determines specific gravity of cracked grain suspension, using hydrometer.
• Turns valves to add grain or water to attain specified density.
• Starts machine that agitates suspension and permits oil-laden germs to rise to surface.
• Adds liquid of specified density that causes germs to float and tests residue for presence of germs.
• Makes iodine titration on fluid and suspension leaving germ separator, computes sulfur dioxide content from amount of iodine added, and records test findings.
• May turn valves to regulate flow of materials to other processes, as directed.
• May operate shakers to remove bran and other fibers from starch suspension.