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河南新研发成功2种国家二级标准物质
河南省计量院新增的“水中氨氮溶液标准物质”“水中铵离子溶液标准物质”获国家市场监督管理总局批准,将投产全国标物市场,这两种标准物质研发,也填补了河南省在该领域标准物质研制能力的空白。
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中国质量新闻网
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2021-10-15 00:42:01
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