Hood stoppers'button'should face forward.

胡德胶塞'按钮'应该面对前进.

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Objective : To determine residual di - paraxylylene in parylene film coated rubber closure by HPLC.

目的: 用高效液相色谱法测定聚对二甲苯覆膜胶塞中残留二聚对二甲苯的含量.

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Butyl rubber closures had replaced of natural rubber closures and had been applied in pharmaceutical packaging.

丁基胶塞已经逐步取代天然胶塞,在药品包装行业广泛应用.

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