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litmus ph test strips and color samples
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Author:
dreamstime
License:
buy for Personal Use & Commercial
File Type:
JPG
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acid
acidic
alkaline
alkalinity
analysis
analyzing
background
biology
care
chemical
chemistry
closeup
color
compare
control
diagnosis
diagnostic
diagnostics
dipsticks
discoloration
experiment
health
horizontal
indication
indicator
isolated
laboratory
litmus
measurement
medical
medicine
neutral
paper
quick
rapid
red
reference
research
result
sample
scale
strip
strips
test
universal
value
water
white
yellow