Ключевые слова: acid, alkaline, analyze, balance, basic, caucasian, check, chemical, cl, clean, composition, condition, control, disinfection, exam, home, hygiene, inspection, kit, level, maintain, maintenance, manual, measure, meter, monitoring, parameters, ph, pill, pool, private, purity, quality, sample, swimming, swimming pool, test, unrecognizable, verification, water, woman, young,