Lab Skills: Preparing Stock Solutions

in this video I walk you through the process of preparing a stock solution. 00:00 - Introduction 00:57 - Obtaining the molecular weight of your reagent 02:10 - Calculations (How many grams do you need?) 04:09 - Using the scale 05:52 - Selecting the right beaker 06:62 - A note about water: use the most pure water available to you 07:06 - Making the actual solution 08:09 - Proper use of a stir plate 10:09 - Bringing the volume up to the desired amount 14:21 - Using Parafilm