Ключевые слова: acid, alkaline, background, balance, bright, chemical, chemicals, chemistry, chlorine, clean, cleaner, clear, color, day, environment, garden, home, house, hygiene, kit, lab, laboratory, liquid, measure, measurement, mini, mini test kit, outdoor, ph, pool, red, resort, result, safety, service, small, space, summer, swimming, swimming pool, tes, test, test kit, transparent, treatment, tropical, tube, water, water testing, wet,