Ключевые слова: acid, acidic, acidity, alkaline, analysis, biochemical, biochemistry, biology, biotechnology, blood, chart, chemical, chemist, chemistry, diabetes, dish, doctor, experiment, glass, indicator, infected, lab, laboratory, liquid, litmus, man, medical, medicine, meter, microbiology, neutral, organic, pee, petri, ph, pharmaceutical, pregnancy, research, saliva, sample, science, scientific, scientist, sterile, strip, test, tube, urinalysis, urine, water,