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
2-硝基苯磺酰氯
砂芯漏斗
磺胺甲二唑
1-萘甲腈
220V加热炉丝
砷单元素溶液标准物质
NOT LONGER AVAILABLE !
HyperSep Hypercarb SPE Column, 50mg/1mL 50个/包装
9种元素ICP-MS混标,100mg/L溶于2% HNO3
Retort ring with bosshead, ? 160 mm, closed, length 70 mm, malleable iron, epoxy coated