GMP制药纯化水中管路钝化与蓝点试验介绍

酸洗：酸洗的目的是利用酸洗液将金属表面的铁锈氧化物等污垢进行化学和电化学反应，生成可溶性物质，并利用酸洗液的冲刷作用除去污垢。

Pickling. Pickling aims to make dirt like rustedoxide on the surface of metal proceed with chemical and electromechanical reactionto produce dissoluble material and get rid of dirt with pickling solution.

钝化结束后：排尽钝化液洗液，用纯化水（氯离子小于0.1ppm）进行冲洗，除去残留的钝化液，当PH直接近中性Ph>6，电导率差小于0.5μs/cm，即可结束。

After finishingpassivation, drain away solution for passivation and flush with purified water(chlorine icon is less than 0.1ppM) to remove remaining passivation solution.When PH is close to the neutralization (pH>6), difference of conductivityless than 1μs/cmpassivation finishes.

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