Perform tests to check the qualities and grades of products, such as assessing levels of bottom sediment, water, and foreign materials in oil samples, using centrifugal testers.
- 51-9061.00 Inspectors, Testers, Sorters, Samplers, and Weighers
- 51-9023.00 Mixing and Blending Machine Setters, Operators, and Tenders
- 51-9012.00 Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders
- 51-9021.00 Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders
- 51-8091.00 Chemical Plant and System Operators
