The Tour of Collective Wisdom presents:
Rookie Mistakes

Tour the Mistakes

Equipment Reagents Setup Quenching Rxns Workup Chromatography
Distillation Spectroscopy Cleaning Record-Keeping Accidents Miscellaneous

Top Ten Mistakes

MistakeNumber of rookies who have done this
Tried to drain sep. funnel with stopper still in 373
Bumped solution on rotovap. 342
Forgot to pre-weigh your round bottom flask. 307
Poured a reaction mixture into a separating funnel without closing the tap. Recovered reaction mixture from the bottom of the fume hood. 290
Set up reaction under Ar, added in reagents and forgot to add stir bar 286
Solvent run all the way to the top of TLC plate 280
Didn't label a flask. One week later, have NO idea what is inside. 275
Handled volatile, smelly and/or toxic solvents or reagents (benzene, carbon disulfide, acrylates, etc.) outside of the fume hood. 262
Sniffed noxious compound/gas/solvent, not waft! 238
Use of a little stirr bar with a big flask 220

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