Mix Liquid In Tube. Sample Of Tester In Vial. Probe Change Color In Lab (Stock Footage)

Mix Liquid In Tube. Sample Of Tester In Vial. Probe Change Color In Lab (Stock Footage)

Worker of testing center mixes liquid in glass beaker, changing color from red to orange. Female with gloves check quality of oil in science lab at tank farm. Test of blend close up indoors

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