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LiChroCART 30-4,Purospher STAR NH2 5μm定制柱
正己烷中8种有机氯农药混合溶液标准物质
玻璃管
刻度量筒,低型,100: 2 ml,SAN材质
B.TIP TEF.VALVE SGJ150 SCH*
STIRRER COMPRESSED AIR RO 25, OVERALL LENGTH: 155 MM 0,2 - 6 BAR, MADE OF STAINLESS STEEL
气进样针
Insert单个内嵌小室,13 mm,24/6,PET膜,1.0μm,IOS
1,5%ov-1+2.4%ov-225 on chromosorb w hp 890-100mesh 3m 1/8 su
气接头