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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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氯化钠二级标准品 volumetric standard, secondary reference material for argentometry, traceable to NIST SRM CertiPUR®
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碳酸钠二级标准品 volumetric standard, secondary reference material for acidimetry, traceable to NIST SRM CertiPUR®
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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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Potassium dihydrogen phosphate, United States Pharmacopeia (USP) Reference Standard | 磷酸二氢钾 | MedChemExpress (MCE)
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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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Potassium acetate, United States Pharmacopeia (USP) Reference Standard | 乙酸钾,医药级 | MedChemExpress (MCE)
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磷酸钠 一元,7558-80-7,BioReagent Plus,≥99.0%
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