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四螨嗪标准溶液,74115-24-5,analytical standard,100ug/ml in actone
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O型圈O-RING,4D-S50,用于LCMS 9030
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Cole-Parmer Nozzle O-Ring for Rotary Evaporator, 4/pk
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First Standard® 甲苯中联苯肼酯溶液,100ug/ml
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Advantec 304716 FEP O-Ring for SS Filter Holders, 47 mm
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O型圈 O-RING,AS568-272 FKM,用于LCMS-8030
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O型圈 O-RING,AS568-278 FKM,用于LCMS-8030
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敌百虫标准溶液,52-68-6,analytical standard,100ug/ml in acetone
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O型圈O-ring for Insert (10pc)用于GC-2010
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甲基毒死蜱标准溶液,5598-13-0,100ug/ml in acetone,u=6~4%
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