apparatus
aromatherapy
chemical
chemist
chemistry
class
demonstration
development
distillation
education
element
equipment
erlenmeyer
essence
essential
extract
extraction
extractor
flask
fluid
glass
health
herbal
instrument
laboratory
liquid
oil
organic
pharmaceutical
pharmacist
pharmacology
pharmacy
plant
reflux
research
school
science
scientific
scientist
solution
soxhlet
study
technician
technology
thimble
water