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1-丁基-4-甲基吡啶溴盐
SEALING RINGS (VITON), FOR POLISHED SPHERICAL JOINTS, KS 19
2,4-二氟甲苯
SUPELCOGEL CA/C611 GUARD COLUMN, 5CM X 4 .6MM
Grey-blue Rubber Stoppers, ? bottom 23,0 mm, ? top 29,0 mm, Length 30 mm
22种VOC混标 标准品
MS-CA2/640
磁力搅拌子，PTFE，34 x15 mm，卵形
(安亭) 低速台式离心机，变频电机电脑控制
TUBES BLOOD SUGAR,ACC.TO FOLIN-WU, 220 X 19 MM O.D., MARKS AT 4-12,5,25 ML
