洗滴定管时,如有明显油污,则需用洗液浸洗。洗涤时向管内倒入 10mL 左右铬酸洗...

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洗滴定管时,如有明显油污,则需用洗液浸洗。洗涤时向管内倒入 10mL 左右铬酸洗液(碱式滴定管将乳胶管内玻璃珠向上挤压封住管口或将乳胶管换成乳胶滴头),再将滴定管逐渐向管口倾斜,并不断旋转,使与洗液充分接触,管口对着废液缸,以防洗液撒出。若油污较重,可装满洗液浸泡,浸泡时间的长短视沾污情况而定。

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