標(biāo)題: 購(gòu)買(mǎi)的標(biāo)樣還需要分析校正嗎? [打印本頁(yè)] 作者: newnoob 時(shí)間: 2014-9-18 14:56 標(biāo)題: 購(gòu)買(mǎi)的標(biāo)樣還需要分析校正嗎? 購(gòu)買(mǎi)的標(biāo)樣，證書(shū)提供的含量應(yīng)該可以直接用。但如ASTM D5599，“before preparing the standards,determine the purity of the oxygenate stocks and make corrections for the impurities found. Whenever possible,use stocks of at least 99.9% purity. Correct for the purity of the components for water content determined by Test method D1744."