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

5-Nitrobarbituric acid hydrate

5-硝基巴比妥酸 水合物

Aldrich^® coiled condenser with SafetyBarb^® hose connectors

DuraSeal^TM laboratory stretch film

Microcapillary tube Drummond Microcaps^®

Drummond Microcaps微量毛细管^®

Slides, microscope

载玻片

Ace auto-zero McLeod vacuum gauges

Ace flat-bottom reaction flasks

Ace four-neck round-bottom flask

ACE heavy-wall powder funnels

Ace precision-ground shaft