Close-up of the doctora??s hands preparing a sample for a gas chromatography test.
Palabras clave
medicals,
health,
laboratory,
doctor,
research,
acid,
laboratory,
liquid,
pipe,
ph,
safety,
science,
scientific,
scientist,
substance,
tap water,
hardness,
scientist,
chemist,
glove,
acidic,
acidity,
analysis,
biochemistry,
biology,
biotechnology,
check,
chemical,
alkaline,
chemistry,
education,
female,
glassware,
experiment,
drinking water,
discovery,
corrosive,
control,
contamination
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