如果企业客服不在线,也可拨打400电话联系。或者发布求购信息
PCL 2-氯苯基苯甲醇 分析标准品
2,3,3',4,4',5,5'-七氯联苯
品管查核 标准品 for checking the quality of photometric methods for ammonium, CSB and nitrogen Spectroquant®
代森锰锌
First Standard® 曲酸
重铬酸钾吸光度/透射率标准品
2,3,3',5,5',6-六氯联苯
EPA Method 537 Surrogate Primary Dilution Standard (SUR PDS)
First Standard® 螺虫乙酯-烯醇
品管查核 标准品 for checking the quality of photometric methods for CSB, nitrate and phosphorus Spectroquant®