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PH meter measuring the pH of the water in the glass on isolated white background used solution solu
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- chemistry lab
- chemistry
- experiment
- chemical
- chemical lab
- scientific
- science
- lab test
- lab
- laboratory
- medical science
- biology
- molecule
- glass water
- measurement
- meter
- black water
- liquid
- background medical
- black liquid
- drink water
- medical test
- monitor screen
- water
- bg orange
- background water
- orange yellow
- black glass
- black yellow
- fluid
- drink
- yellow
- screen
- calibration
- bg yellow
