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预灌封注射器的空气残留量

2019-06-27 17:29

理论上生产预灌封注射器时不可能做到无气泡,因为即使在最低的真空下也仍然会有一些空气分子留在注射器内。如果使用最佳的工艺条件,则可能会使气泡小到肉眼看不到的地步。残存气泡的大小主要取决于操作时注射器内的真空度和灌装液位。溶解的气体量是可以忽略的,举例来说,采用传统的真空压塞方式:在一支1ml (长)的注射器内灌装0.75ml的水性产品,并在 100mbar的压力下压塞,则会产生直径为 2mm 的气泡(基于1000mbar的压力)。 由于气体在预灌封注射器产品中溶解,气泡的体积可以减少大约10%。


5ml预灌封注射器

5ml预灌封注射器


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