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    Teenage female university student practicing experiment in chemistry lab — Stock Photo
    Teenage female university student practicing experiment in chemistry lab
    Close-up of multichannel pipette with green liquid pipetting into multiwell plate in laboratory. — Stock Photo
    Close-up of multichannel pipette with green liquid pipetting into multiwell plate in laboratory.
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Male adult engineer in water treatment plant — Stock Photo
    Male adult engineer in water treatment plant
    Microbiology technician working with bacteria strains in plastic box. — Stock Photo
    Microbiology technician working with bacteria strains in plastic box.
    Female students performing chemistry experiment in lab — Stock Photo
    Female students performing chemistry experiment in lab
    Engineer walking by water treatment plant ultraviolet ionization treatment room — Stock Photo
    Engineer walking by water treatment plant ultraviolet ionization treatment room
    Lab technician holding tray of calibrated samples — Stock Photo
    Lab technician holding tray of calibrated samples
    Agronomy technician pouring water in soil samples. — Stock Photo
    Agronomy technician pouring water in soil samples.
    Vegetables in glass bottle — Stock Photo
    Vegetables in glass bottle
    Biologist hand with protective glove holding trowel with soil above samples separated in containers. — Stock Photo
    Biologist hand with protective glove holding trowel with soil above samples separated in containers.
    Close-up of female scientist taking notes in soil testing laboratory. — Stock Photo
    Close-up of female scientist taking notes in soil testing laboratory.
    Graduated pipette and test tubes — Stock Photo
    Graduated pipette and test tubes
    Female scientist in laboratory looking at glass flask with dissolved samples of soil. — Stock Photo
    Female scientist in laboratory looking at glass flask with dissolved samples of soil.
    Scientists holding multiwell plate with chemical solution for analytical testing in laboratory. — Stock Photo
    Scientists holding multiwell plate with chemical solution for analytical testing in laboratory.
    Teenage girls practicing experiment while standing in lab — Stock Photo
    Teenage girls practicing experiment while standing in lab
    Close-up of multichannel pipette with green liquid on multiwell plate in laboratory. — Stock Photo
    Close-up of multichannel pipette with green liquid on multiwell plate in laboratory.
    Mid section of scientist in laboratory mixing samples of soil with reagent. — Stock Photo
    Mid section of scientist in laboratory mixing samples of soil with reagent.
    Vials with red and blue liquids. — Stock Photo
    Vials with red and blue liquids.
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil. — Stock Photo
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil.
    Technician holding blood, urine and chemistry samples for clinical testing in gloved hand. — Stock Photo
    Technician holding blood, urine and chemistry samples for clinical testing in gloved hand.