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qjqj912銅蟲 (小有名氣)
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[求助]
TraceSelect KOH什么意思? 已有3人參與
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| TraceSelect KOH什么意思?謝謝 |
木蟲 (正式寫手)
銀蟲 (小有名氣)
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Sample prep for trace analysis applications requires reagents of highest purity. Specifically, they must have very low metal content to ensure appropriately low blanks. 用于痕量分析的準(zhǔn)備樣品要求試劑有最高的純度。特別是它們必須有很低的金屬含量保證合適的低空白。 Traceselect®硝酸,≥69.0%(超高純,鉻含量低于0.001ppm) Traceselect®氨水,≥25%(超高純,鉻含量低于0.001ppm) 參考資料TraceSelect應(yīng)該是超高純(供參考) [ 發(fā)自手機(jī)版 http://www.gaoyang168.com/3g ] |
至尊木蟲 (著名寫手)

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