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pH指示剂溶液 pH 0-5 配色卡 pH 0 - 0.5 - 1 - 1.5 - 2 - 2.5 - 3 - 3.5 - 4 - 4.5 - 5
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乙酸盐缓冲液,pH 4.5,用于氰化物测定,pH 4.5
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pH试纸 non-bleeding pH 2.5 - 3.0 - 3.3 - 3.6 - 3.9 - 4.2 - 4.5
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NCS145012 标准物质/pH标准溶液缓冲溶液pH=4.5
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pH试纸 Roll (4.8 m) with colour scale pH 0.5 - 1.0 - 1.5 - 2.0 - 2.5 - 3.0 - 3.5 - 4.0 - 4.5 - 5.0 Acilit®
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4.5-二氯儿茶酚
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pH试纸 non-bleeding pH 0 - 0.5 - 1.0 - 1.5 - 2.0 - 2.5 - 3.0 - 3.5 - 4.0 - 4.5 - 5.0 - 5.5 - 6.0 Acilit®
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柠檬酸盐缓冲液,0.5M,pH4.5
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邻苯二酚标准溶液
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指示剂溶液 Ph 4.0-10.0 通用指示剂,配色卡 pH 4.0 - 4.5 - 5.0 - 5.5 - 6.0 - 6.5 - 7.0 - 7.5 - 8.0 - 8.5 - 9.0 - 9.5 - 10.0
pH-indicator solution pH 4.0 - 10.0 Universal Indicator with colour card pH 4.0 - 4.5 - 5.0 - 5.5
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