Johnson® High Precise(0.2~0.5 pH-divi.) Color Pad Polypropylene pH Comparator, “Non-Bleed” System Special Use for the Accurate Test of Short-ranges of pH 0.2~0.5 Intervals, 8 items in Overall-range pH 1.0~10.0 초정밀pH측정용칼라 패드 PP콤퍼레이터, “0.2 ~ 0.5 pH단위”로“총, 8 items”로, 총측정범위“pH 1.0~pH 10.0”을측정. 용액에“번짐 / 퍼짐이 없음”