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甲醇中4,4'-甲氧滴滴涕溶液,1000μg/mL 广电计量
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油麦菜中六六六、滴滴涕质控样
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油麦菜中滴滴涕、六六六质控样
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4,4-滴滴涕溶液, 100ppm
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4种兽药混标溶液,100ppm
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First Standard® 乙腈中2,4’-滴滴涕溶液,1000ug/ml
2,4'-DDT Solution in Acetonitrile, 1000μg/mLFirst Standard®天津
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First Standard® 丙酮中2,4’-甲氧滴滴涕溶液,100μg/mL
2,4’-Methoxychlor Solution in Acetone, 100μg/mLFirst Standard®天津
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First Standard® 2,4"-甲氧滴滴涕
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油麦菜中滴滴涕质控样 BQC1350221641
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氮中硫化氢<100ppm 氮中硫化氢<100ppm
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