Sigma-Aldrich
Breathe-Easy® sealing membrane
Breathe-Easy®封膜
DuraSealTM laboratory stretch film
Low-profile roller
Microcapillary tube Drummond Microcaps®
Drummond Microcaps微量毛细管®
Ace addition funnel
Ace European-style three-neck flask
Ace flat-bottom reaction flasks
ACE heavy-wall powder funnels
Ace precision-ground shaft
Ace reaction flask head w/ thermometer joint
Ace vacuum-sublimation apparatus
Aldrich® can/drum adapters
Aldrich® corrosive lecture-bottle gas regulator
Aldrich® glass reference electrode
Aldrich® 玻璃参比电极
Aldrich® non-corrosive lecture-bottle gas regulator