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 초정밀 pH 측정용 칼라 Pad PP 콤퍼레이타, “0.2 ~ 0.5 pH 단위” 로“, 총 8 items”로, 총 측정범위 “pH 1.0~pH 10.0” 을 측정. 용액에“ 번짐 / 퍼짐이 없음”