Replacement O-rings for five-position NMR tube cleaner system

Ace four-neck round-bottom flask

ACE heavy-wall powder funnels

ACE PTFE-coated glass shaft

Ace round-bottom flask with threaded side-arm

Adjustable Jacobs^® chuck

Aldrich^® corrosive lecture-bottle gas regulator

Aldrich^® glass pH electrode

Aldrich^® IR sample prep kit

Aldrich^® 红外样品制备套装

Aldrich^® non-corrosive lecture-bottle gas regulator

Aldrich^® System 45^TM PTFE-faced silicone cap liners