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电导度液标准品 0.147 mS/cm certified reference material for the measurement
Potassium chloride solution (nominal 0.147 mS/cm) certified reference material for the measurement
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电导度液标准品 1.41 mS/cm certified reference material for the measurement
Potassium chloride solution (nominal 1.41 mS/cm) certified reference material for the measurement
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电导度液标准品 1.41 mS/cm certified reference material for the measurement
Potassium chloride solution (nominal 1.41 mS/cm) certified reference material for the measurement
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花生四烯酸,506-32-1,1.0 mg/mL in ethanol, certified reference material
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Reference material for permanganate index,COD(Mn):3.03mg/L in water
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UV/VIS 校正标准品 6 -- 波长 reference material for the wavelength according to Ph Eur
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邻苯二甲酸双(2-乙基己基)酯 溶液,117-81-7,certified reference material, 2000 μg/mL in methanol
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Calcium acetate, United States Pharmacopeia (USP) Reference Standard | 乙酸钙 | MedChemExpress (MCE)
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Ammonium chloride, United States Pharmacopeia (USP) Reference Standard | 氯化铵 | MedChemExpress (MCE)
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正庚烷,142-82-5,Standard for GC,>99.5%(GC)
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