氧化钴(II,III) [四氧化三钴],Cobalt(II,III) oxide;≥99.99% trace metals basis
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C18-反相硅胶,C18-reversed phase silica gel;for column chromatography, fully endcapped -
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无水硫酸钠,Sodium sulfate;anhydrous, coarse granules for analysis EMSURE® ACS, ≥99.0% (acidimetric) -
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