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发表于 2022-8-29 17:51:14
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6.1.2 Rinse Sampling 冲洗法取样 Rinse sampling involves sampling the equipment by flowing solvent (which may be water, an aqueoussolution, an organic solvent, or a water/organic solvent mixture) over all relevant equipment surfacesto remove residues, which are then measured in the rinse solvent. Collection of rinse samples shouldconsider solubility, location, timing and volume. One type of rinse sampling technique is to take a“grab” sample from the final portion of the rinse solvent during the final rinse of the cleaning process.A “grab” sample is a single sample collected from a rinse solution that represents the composition ofthe rinse solution at that time. As used in this document, a grab sample generally refers to a singlesample withdrawn from the final portion of a CIP rinse. 冲洗法取样是指在相关设备表面采用流动的溶剂(水,含水溶液,有机溶剂或者水/有机溶剂混合物) 去除残留物,然后再检测冲洗液中残留量。冲洗样本的采集应考虑溶解度,位置,冲洗时间以及冲 洗体积。冲洗取样的一种方法是在最终冲洗过程中“抓取”冲洗溶液的最后一部分作为样品。一个“抓 取”样本是从冲洗液中收集单一样本,能够代表此时冲洗液的组成。本指南中,一个“抓取”样本 一般指从在线清洁的最终冲洗部分取出的单一样本。
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A second type of rinse sampling is to utilize a separate sampling rinse after completion of the processrinse.This separate sampling rinse may involve filling the equipment to an appropriate level with solventand agitating that solvent to make the composition of the residue in the sampling rinse is homogeneous.Then a sample of that solvent is taken and analysed. This separate sampling rinse may alternatively bea separate CIP sampling rinse, which may involve a once-through sampling rinse or a recirculating samplingrinse. For a once-through separate sampling rinse, it is necessary to collect the entire volume of theseparate sampling rinse, agitate it until it is homogeneous, and analyze a sample from the homogenousrinse. For a recirculating separate rinse, homogeneity is generally achieved by recirculation. 第二种冲洗取样方法是在冲洗过程结束后,单独进行冲洗取样。这个单独的取样包括向设备中加入 一定体积的溶剂,搅拌使冲洗液中残留物分布均匀。然后取出冲洗溶液样品进行分析。这个单独的 冲洗取样可以是一个单独的 CIP 冲洗取样,这涉及了一个单程冲洗取样或循环冲洗取样。对于一个 单程的独立冲洗取样,必须收集全部体积的冲洗溶液,搅拌至均匀,然后进行分析。对于循环的独 立冲洗取样,冲洗样均匀性通常可以通过循环过程实现。
Advantages and disadvantages of both methods for rinse sampling are shown in Table 6.1.2-1. 两种冲洗取样方法的优缺点如表 6.1.2-1 所示 |
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