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The choice for swab or rinse sampling usually depends on the type of equipment. Areas to be swabbed are determined during equipment and cleaning validation (‘hard to clean areas’), and are preferably readily accessible for operational reasons, e.g. near the manhole. If swabbing of the indicated area is not easy, rinse sampling is the alternative. The advantage is that the whole surface of the equipment is sampled for contamination, being provided that during equipment qualification, surface wetting testing was taken into account. Thus equipment used for milling, mixing, filters, etc. are usually swabbed, whilst reactor systems are usually sampled by rinsing.
选择擦拭样品还是淋洗样品通常取决于设备的类型。擦拭取样点应在设备验证和清洁验证中确定(难以清洁点),最好还要易于操作,例如接受人孔处。如果要取样的地方很难采用擦拭取样,可以采用淋洗取样。淋洗取样的优点是设备的整个表面都能被取样测试污染程度。淋洗取样时,要考虑表面润湿测试,该测试应在设备确认期间完成。鉴于此,用于粉碎、混合、过滤等的设备一般采用擦拭取样,而反应釜系统一般采用淋洗取样。
选自《APIC清洁验证指南》
擦拭取样点大家在设备验证和清洁验证实际上是怎么确定的呢??最近有听说是凭经验来的,个人不太赞同啊。
关于最难清洗点确定擦拭取样点个人认为只是针对于CIP的设备验证阶段才实用啊,对于那种存在机械清洗(就是人工拆卸清洗),还存在“取样擦洗点"么???既然是能够擦拭取样,那么在机械清洗过程中早就人工机械清洗了,怎么会存在能够擦拭取样的难清洗点呢?这个简直就是一个悖论嘛!@hongwei2000 @谢大侠来了 @石头968
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