analysis
analyzing
biochemistry
biotechnology
bottle
bottled
chemical
chemist
chemistry
clean
contaminated
contamination
control
discovery
drink
exam
examining
experiment
facemask
filtered
fresh
glass
lab
laboratory
liquid
looking
loupe
magnifier
magnifying
man
mask
medical
medicine
microbiology
pollutant
pollution
quality
research
researcher
sample
scientific
scientist
student
studying
substance
test
testing
toxic
virus
water