SPE固相萃取柱 AOAC 无缓冲盐萃取包 4g硫酸钠+1g氯化钠 50只装 60106
SPE固相萃取柱 AOAC 无缓冲盐萃取包离心管 3.5g硫酸镁+15mL离心管 50只装 60108
SPE固相萃取柱 QuEChERS-2mL 50mg PSA/50mg C18/7.5mg GCB/150mg MgSO4 100pk 60186
SPE固相萃取柱 COLUMN,ODS (C18) 200 mg 3 mL 50PK 70120
SPE固相萃取柱 COLUMN,ODS (C18) 500 mg 6 mL 30PK 70140
SPE固相萃取柱 COLUMN,ODS (C18) 1,000 mg 6 mL 30PK 70150