However, unlike product residues, it is expected that no (or for ultra sensitive analytical test methods - very low) detergent levels remain after cleaning.
然而，与产品残留物不同的是，在清洗后不希望有清洁剂存在(或者超敏感检测的量很低)。
Most OEMs use analytical methods to assess the risk of harmful residues.
大部分原始设备制造商采用分析法来评估有害残留的风险。
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