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SV-2 是一種聚酯棉簽,專為驗證表面清潔規程而設計。棉簽頭由雙層針織聚酯織物製成,該織物經過加工可最大限度地減少背景 TOC。聚酯頭的構造不含粘合劑或粘合劑,這使得棉簽可與大多數常見的溶劑兼容,例如酒精和酮。
SV-2 的圓頭和靈活的手柄可以進入凹陷表面,以便更輕松地進行汙染物回收或取樣。棉簽頭采用熱粘合方式與帶凹槽的聚丙烯手柄連接,可盡量減少操作,並改善樣品向小瓶中的插入過程。該棉簽可以通過最常用的方法進行消毒,而且其小巧的體積可確保測試準確且浪費較少。每包 SV-2 包含五根棉簽,包裝在無塵室級可重復密封的袋子內。