Sigmacell纤维素,Sigmacell Cellulose;Type 20, 20 μm
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Sigmacell纤维素,Sigmacell Cellulose;Type 50, 50 μm
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二乙胺,Diethylamine [DEA];purified by redistillation, 99.5%
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羟基脲,Hydroxyurea;Pharmaceutical Secondary Standard; Certified Reference Material
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碳酸钙,Calcium carbonate;ReagentPlus®, ≥99% (EDTA titration)
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黄嘌呤,Xanthine;≥99.5% (HPLC), purified by recrystallization
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多聚蔗糖400,Ficoll® PM 400;Type 400, spray-dried