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    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Close-up of pipettes in stand on desk — Stock Photo
    Close-up of pipettes in stand on desk
    Teenage girl holding clipboard while practicing experiment in lab — Stock Photo
    Teenage girl holding clipboard while practicing experiment in lab
    Female college student using microscope while practicing experiment in lab — Stock Photo
    Female college student using microscope while practicing experiment in lab
    Teenage girl practicing chemistry experiment in lab — Stock Photo
    Teenage girl practicing chemistry experiment in lab
    Teenage girl using digital tablet while standing by desk in lab — Stock Photo
    Teenage girl using digital tablet while standing by desk in lab
    Lab technician adding liquid from graduated cylinder to beaker — Stock Photo
    Lab technician adding liquid from graduated cylinder to beaker
    Close up of beakers on desk in lab — Stock Photo
    Close up of beakers on desk in lab
    Water treatment engineer in treatment room — Stock Photo
    Water treatment engineer in treatment room
    Female university student holding equipment while practicing experiment in laboratory — Stock Photo
    Female university student holding equipment while practicing experiment in laboratory
    Teenage girl performing chemistry experiment in lab — Stock Photo
    Teenage girl performing chemistry experiment in lab
    Female college students practicing chemistry experiment at desk in lab — Stock Photo
    Female college students practicing chemistry experiment at desk in lab
    Young college students practicing chemistry experiment in lab — Stock Photo
    Young college students practicing chemistry experiment in lab
    Teenage girl wearing safety glasses while practicing science experiment in lab — Stock Photo
    Teenage girl wearing safety glasses while practicing science experiment in lab
    Lab technician adding reagent to sample while measuring pH — Stock Photo
    Lab technician adding reagent to sample while measuring pH
    Teenage girl looking at computer while sitting at desk in lab — Stock Photo
    Teenage girl looking at computer while sitting at desk in lab
    Young college students practicing experiment in lab — Stock Photo
    Young college students practicing experiment in lab
    Young male college student practicing experiment while standing in lab — Stock Photo
    Young male college student practicing experiment while standing in lab
    Lab technician recording data from sample test — Stock Photo
    Lab technician recording data from sample test
    Close up of pipettes in plastic stand on table in lab — Stock Photo
    Close up of pipettes in plastic stand on table in lab
    Close up of scientific weight scale on table in lab — Stock Photo
    Close up of scientific weight scale on table in lab
    Teenage female university student practicing experiment in chemistry lab — Stock Photo
    Teenage female university student practicing experiment in chemistry lab
    Young university students practicing chemistry experiment in lab — Stock Photo
    Young university students practicing chemistry experiment in lab
    Close-up of pipettes in stand on desk — Stock Photo
    Close-up of pipettes in stand on desk
    Side view of teenage girl practicing experiment while using microscope in lab — Stock Photo
    Side view of teenage girl practicing experiment while using microscope in lab
    Teenage girl practicing chemistry experiment in lab — Stock Photo
    Teenage girl practicing chemistry experiment in lab
    Close up of scientific equipment in lab — Stock Photo
    Close up of scientific equipment in lab
    Side view of young female student using microscope in lab — Stock Photo
    Side view of young female student using microscope in lab
    Female students using computer while practicing experiment in lab — Stock Photo
    Female students using computer while practicing experiment in lab
    University students performing experiment in lab — Stock Photo
    University students performing experiment in lab
    Close up of microscope in laboratory — Stock Photo
    Close up of microscope in laboratory
    Lab technician adding liquid to graduated cylinder — Stock Photo
    Lab technician adding liquid to graduated cylinder
    Male student reading record while practicing chemistry experiment in lab — Stock Photo
    Male student reading record while practicing chemistry experiment in lab
    Female student holding equipment while practicing experiment in laboratory — Stock Photo
    Female student holding equipment while practicing experiment in laboratory
    Male and female student standing in lab — Stock Photo
    Male and female student standing in lab
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Lab technician igniting Bunsen burner — Stock Photo
    Lab technician igniting Bunsen burner
    Teenage student using machinery in laboratory at college — Stock Photo
    Teenage student using machinery in laboratory at college
    High angle view of girl using computer while practicing experiment in lab — Stock Photo
    High angle view of girl using computer while practicing experiment in lab
    Teenage female practicing chemistry experiment in lab — Stock Photo
    Teenage female practicing chemistry experiment in lab
    Lab technician opening sterilization tank — Stock Photo
    Lab technician opening sterilization tank
    Lab technician filling Petri dishes — Stock Photo
    Lab technician filling Petri dishes
    Lab technician holding tray of calibrated samples — Stock Photo
    Lab technician holding tray of calibrated samples
    Lab technician using flame test probe to gather sample from vile — Stock Photo
    Lab technician using flame test probe to gather sample from vile
    Lab technician removing sample vial cap — Stock Photo
    Lab technician removing sample vial cap
    Lab technician picking up samples — Stock Photo
    Lab technician picking up samples
    Lab technician holding sample in flame — Stock Photo
    Lab technician holding sample in flame
    Engineer walking by water treatment plant ultraviolet ionization treatment room — Stock Photo
    Engineer walking by water treatment plant ultraviolet ionization treatment room
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Water treatment plant ultraviolet ionization treatment room — Stock Photo
    Water treatment plant ultraviolet ionization treatment room
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Lab technician collecting data on sterilization — Stock Photo
    Lab technician collecting data on sterilization
    Laboratory scientist adding a small amount of solid reagent to a container on a scale — Stock Photo
    Laboratory scientist adding a small amount of solid reagent to a container on a scale
    Chemistry apparatus glassware on table in laboratory. — Stock Photo
    Chemistry apparatus glassware on table in laboratory.
    Close-up of chemistry apparatus glassware in laboratory. — Stock Photo
    Close-up of chemistry apparatus glassware in laboratory.
    Closeup view of empty laboratory beakers in drawer — Stock Photo
    Closeup view of empty laboratory beakers in drawer
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Closeup view of empty laboratory beakers in drawer — Stock Photo
    Closeup view of empty laboratory beakers in drawer
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies