做金属分析用完的容量瓶怎样清洗

应助达人

容量瓶一般首先是用自来水冲洗一遍，然后使用酸桶浸泡，泡酸的酸度参照ISO8124-5中
5.2 Apparatus
All glassware shall be soaked in 10 % (v/v) nitric acid (5.1.2 Nitric acid, 10 % (v/v): Add 100 ml concentrated nitric acid (5.1.1Nitric acid, concentrated, 1,40 g/ml, 65 % (v/v), “analytical” grade.) to 500 ml water (5.1.4Water, of at least grade 3 purity, in accordance with ISO 3696.). Dilute
to 1 000 ml with water (5.1.4Water, of at least grade 3 purity, in accordance with ISO 3696.) for at least 2 h and then rinsed in deionised water before use.
酸度为10%体积比的硝酸浸泡不少于2个小时