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제품설명
Johnson® pH 1~14 (Roll-type) Full-Range Universal Test Paper, with Plastic Dispenser & Standard Color-ChartpH 1~14 (롤-타입) 광역만능시험지, 용액의 pH(산?알칼리도 / 수소이온농도) 를 14-Steps의 색상변화로 측정함.