Job Description:

• 1) Controls fermentation chambers and tanks to produce enzymes from fungal or bacterial growth for use as industrial catalysts: Sprinkles seed from hand container into mixing drum containing culture medium, such as bran, and starts drum revolving for specified time to disperse seed throughout medium.

• 2) Opens drum to discharge batch into tubs, and shovels batch onto trays.

• 3) Places trays on racks and pushes them into growing chambers.

• 4) Sets thermostats, observes pressure gauges and meters, and moves controls to maintain specified atmospheric conditions that promote growth of culture.

• 5) Examines batch for contamination by smell, touch, or observation, using knowledge of fermentation reactions.

• 6) Removes trays from chamber after specified time.

• 7) Dumps contents onto conveyor that transfers material through delumping machine into portable tanks.

• 8) Positions tanks under water faucets and opens valves to flush enzymes through sieve.

• 9) Turns valve to siphon solution through series of portable tanks into head tank.

• 10) Tests extraction for specific gravity, acidity, and alkalinity, using hydrometer and litmus paper; and adds specified salts, acids, or bases.

• 11) May start centrifuge to separate solids from product.