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seracare試劑在應(yīng)用中具有四種常用規(guī)格
發(fā)布時間： 2021-05-25 點擊次數(shù)： 851次seracare試劑又稱生物化學試劑或試藥。主要是實現(xiàn)化學反應(yīng)、分析化驗、研究試驗、教學實驗、化學配方使用的純凈化學品。一般按用途分為通用試劑、高純試劑、分析試劑、儀器分析試劑、臨床診斷試劑、生化試劑、無機離子顯色劑試劑等。四種常用規(guī)格：有四種常用規(guī)格：優(yōu)級純或一級品（GR，精密分析和科學研究工作）；分析純或二級品（AR，重要分析和一般研究工作）；化學純或三級品（CP，工礦及學校一般化學實驗）；實驗試劑(L.P.)。優(yōu)級純（GR，綠標簽）：主成分含量很高、純度很高，適用于精確分析和研究工作，有的可作為基準物質(zhì)。分析純（AR，紅標簽）：主成分含量很高、純度較高，干擾雜質(zhì)很低，適用于工業(yè)分析及化學實驗。化學純（CP，藍標簽）：主成分含量高、純度較高，存在干擾雜質(zhì)，適用于化學實驗和合成制備。實驗純（LR，黃標簽）：主成分含量高，純度較差，雜質(zhì)含量不做選擇，只適用于一般化學實驗和合成制備。基準試劑含量應(yīng)該是99.9%～100%。隨著科學技術(shù)和新興工業(yè)的發(fā)展，對化學試劑的純度、凈度以及精密度要求愈加嚴格和專門化。在分析化學中應(yīng)用極為廣泛。試劑的品級與規(guī)格應(yīng)根據(jù)具體要求和使用情況加以選擇 。定級的根據(jù)是試劑的純度（即含量）、雜質(zhì)含量 、提純的難易，以及各項物理性質(zhì)。有時也根據(jù)用途來定級 ，例如光譜純試劑、色譜純試劑，以及pH標準試劑等等。
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