25％濃度の水酸化ナトリウムアルカリ液、停止時のブロー媒体の問題
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なぜ purging規格では、purge対象媒体がアルカリ液の場合には水をpurge媒体として使用できず、蒸気によるpurgingが推奨されるのでしょうか？
どこに規定されてるの？私たちのアルカリ液システムの交換は、まず水で洗浄します。
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