|3||TLC-The Basics |
Thin-layer chromatography is the most commonly used analytical technique in many research labs. This video walks you through every step, from setting up a developing chamber to calculating Rf values.
|5||Reaction Work-Up I |
Extracting, Washing and Drying: It ain't over ‘til it's over. Learn how to "work up" your reaction using a separatory funnel to perform a liquid-liquid extraction. This is one purification technique you don't want to miss!
|6||Reaction Work-Up II |
Using the Rotavap: The rotary evaporator is your friend in the lab. This video will ensure that you build a safe and productive relationship.
Recrystallization takes patience, but it's worth it! This video walks you through the procedure, from solubility tests to cold filtration, with information on one-solvent and two-solvent recrystallizations.
|10||Column Chromatography |
It takes considerable practice to master the art of "running a column". This video will get you started, with tips on picking appropriate conditions, packing and running a column, monitoring separation, and even making a micro-column from a pipet.
|11||Using a Balance |
Correct usage and maintenance of a balance is a basic skill that is essential in any laboratory procedure.
|12||Melting Point Determination |
Throughout your laboratory experiences, you will frequently need to assess the purity or identity of a crystalline solid. Both of these goals can be accomplished by determining a compound's melting point.
|15||Distillation I: Simple & Fractional Distillations |
Learn how to separate or purify liquid mixtures that boil below 150°C with or without a fractionating column.
|16||Distillation II: Vacuum Distillations |
Do you need to purify a liquid that boils above 150°C? This video shows you how to perform a distillation under vacuum.
|17||Refluxing a Reaction |
Most organic reactions occur slowly at room temperature and require heat to allow them to go to completion in a reasonable time frame. Running a reaction under reflux allows you to heat a reaction without losing solvent due to evaporation and with causing an explosion.