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       CODE: 029.261-022 Buy the DOT:Download/CD-ROM
TITLE(s): TESTER (petrol. refin.) alternate titles: crude tester; gas analyst; laboratory
inspector; laboratory technician; laboratory tester; oil tester
Tests and analyzes samples of crude oil and petroleum products during processing stages, using
laboratory apparatus, testing equipment, and following standard test procedures to determine
physical and chemical properties and ensure products meet quality control standards: Tests samples
of crude and blended oils, gases, asphalts, and pressure distillates to determine characteristics,
such as boiling, vapor, freeze, condensation, flash and aniline points, viscosity, specific gravity,
penetration, doctor solution, distillation, and corrosion, using test and laboratory equipment, such
as hydrometers, fractionators, distillation apparatus, and analytical scales. Analyzes content of
products to determine presence of gases, such as propane, iso-butane, butane, iso-pentane, and
ethene. Determines hydrocarbon composition of gasolines, blending stocks and gases, using fractional
distillation equipment, gas chromatography, and mass spectrometer. Operates fractionation column to
separate crude oil into oils with different boiling points to determine their properties. Analyzes
composition of products to determine quantitative presence of gum, sulfur, aromatics, olefins,
water, and sediment. Compares color of liquid product with charts to determine processing factors
measurable by color. May test air and water samples to detect industrial pollutants.
GOE: 02.04.01 STRENGTH: L GED: R4 M4 L3 SVP: 6 DLU: 77
ONET CROSSWALK: 24511E Geological Sample Test Technicians
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