七种阴离子混标,50ML/瓶
商家询价 上海希言科学仪器有限公司
PTFE Tubing 1000 mm
PE 单元素标准品(1,000 g/mL)锌 Zn 2% HNO3 N9300178
Zinc 1 000 μg/mL 2% HN03 Pure 125 mL
Mercury 1 000 μg/mL 10% HN03 Pure 125 mL
KOH 淋洗液罐-EGC500型
COL-Elite-5-60 m-1.5 μm-.53 mm
20 mL HS Clear Screw Top Vials Pkg. 100
MP2 PVC Flared 0.19mm Org/Red Pkg.12
HyperSep Aminopropyl 固相萃取小柱,100mg/1mL ,100/包
Electrodeless Discharge Lamp Sys. 2 - Tl