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제품설명
Johnson® Congo red-, Brilliant yellow-, Turmeric-, Phenolphthalein-, & Clayton yellow- Papers for Analysis of a Solution(Acidity or Alkalinity), pH Neutralization Point Test Paper 특정영역대의 pH 연화점(중화점) 측정지들 : 콩고레드, 브릴리언트옐로·강황지·페놀프탈레인·클레이톤옐로-중화점에서 변색됨