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First Standard® 二氯甲烷中4种亚硝胺混标溶液(HJ 809-2016),2000μg/mL
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4种亚硝胺混标 HJ809-2016标准品
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4种亚硝胺混标 HJ809-2016标准品 BW30818DD-1mL
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二氯甲烷中4种亚硝胺混标(HJ 809-2016), 2000μg/ml
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First Standard® 甲醇中9种亚硝胺混标溶液,2000μg/mL
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First Standard® 乙醇中4种防腐剂混标溶液(GB 5009.31-2016),100μg/mL
4 Preservative Mix Solution in Ethanol (GB 5009.31-2016), 100μg/mLFirst Standard®天津
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HJ 809-2016 9种亚硝胺混标
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甲醇中9种亚硝胺混标,2000μg/ml
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First Standard® 水/乙腈中5种核苷酸混标溶液(GB5413.40-2016),100μg/mL
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First Standard® 甲醇中10种亚硝胺混标溶液(GB/T 29669-2013),100μg/mL
10 Nitrosamine Mix Solution in Methanol, 100μg/mLFirst Standard®天津
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