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听众
性别保密
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发表于 2022-8-1 16:28:55
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Recovery values should be established for all surfaces sampled. For swab and rinse sampling, one approachfor this is to perform recovery studies on all surfaces. An alternative is to perform one residuestudy on a surface which through documented evidence is equivalent (in terms of percent recovery)to other surfaces for which a formal recovery study is not performed. This is essentially a grouping orfamilyapproach for recovery studies. Equivalence for establishing the group or family may be establishedbased on published studies or in-house data. Another approach is to exclude formal recoverystudies for sampled surfaces constituting less than a small percentage (such as 1% or 2%) of the totalequipment surface area; in such cases, the recovery value used for that excluded surface is the lowestrecovery of any other surface type for which a formal sampling recovery study was performed, or theminimum acceptable recovery percentage required by the company’s procedures. 应建立所有被取样表面的回收率值。对于擦拭和冲洗取样,一个方法是在所有表面上进行回收率研 究。另一种是在其中一个表面上进行的残留物回收试验,但应有文件证明这个表面等同于(就回收 率百分比而言)其他未进行回收率研究的表面。本质上是分组或分类的回收率研究方法。分组或分 类的依据是已发表的研究或内部数据。另一种方法对于占设备总表面面积比例很小(如低于 1%或 2%)的被取样表面,不进行正式的回收率研究。在这种情况下,未进行回收率研究的表面的回收率 值应为其他任何正式进行回收率研究的被取样表面中的最低值,或者是公司程序中要求的最低回收 率百分比。
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