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4-溴二苯并噻吩
草酸高铁铵三水合物
Tube fitting red cap for 1/4in tubing
ASCENTIS C18 3UM 3CM X 3.0MM HPLC COLUMN
STANDARD THERMOMETER,ENCL.SCALE,BLUE RE- FLECTING,OPAL GLASS SCALE,DIFFICO-GRAD. MERCURY FILLING
TEFLON TUBING, I.D. 8 MM WALL THICKNESS 1 MM.
化学需氧量(CODCr)测定仪检定用标准溶液
DP 蓝色 瓶盖&TST 隔垫
MINI MICROFILTER ASSEMBLY W/2UM FRIT
250ml烧杯