| 1. | Set or adjust machine controls to regulate conditions such as material flow, temperature, and pressure. |
| 2. | Monitor material flow and instruments such as temperature and pressure gauges, indicators, and meters, in order to ensure optimal processing conditions. |
| 3. | Start agitators, shakers, conveyors, pumps, or centrifuge machines, then turn valves or move controls to admit, drain, separate, filter, clarify, mix, or transfer materials. |
| 4. | Examine samples visually or by hand to verify qualities such as clarity, cleanliness, consistency, dryness, and texture. |
| 5. | Collect samples of materials or products for laboratory analysis. |
| 6. | Maintain logs of instrument readings, test results, and shift production, and send production information to computer databases. |
| 7. | Test samples to determine viscosity, acidity, specific gravity, or degree of concentration, using test equipment such as viscometers, pH meters, and hydrometers. |
| 8. | Measure or weigh materials to be refined, mixed, transferred, stored, or otherwise processed. |
| 9. | Clean and sterilize tanks, screens, inflow pipes, production areas, and equipment, using hoses, brushes, scrapers, or chemical solutions. |
| 10. | Inspect machines and equipment for hazards, operating efficiency, malfunctions, wear, and leaks. |
| 11. | Dump, pour, or load specified amounts of refined or unrefined materials into equipment or containers for further processing or storage. |
| 12. | Connect pipes between vats and processing equipment. |
| 13. | Communicate processing instructions to other workers. |
| 14. | Remove clogs, defects, and impurities from machines, tanks, conveyors, screens, or other processing equipment. |
| 15. | Assemble fittings, valves, bowls, plates, disks, impeller shafts, and other parts to equipment in order to prepare equipment for operation. |
| 16. | Install and maintain or repair hoses, pumps, filters, or screens in order to maintain processing equipment, using hand tools. |
| 17. | Turn valves to pump sterilizing solutions and rinsewater through pipes and equipment, and to spray vats with atomizers. |
| 18. | Remove full bags or containers from discharge outlets, and replace them with empty ones. |
| 19. | Pack bottles into cartons or crates, using machines. |