Caution: This procedure should be performed under a fume hood
Using a clean glass (not plastic) syringe remove the desired volume of organic solvent (chloroform) from the stock bottle.
Transfer the organic solvent to a glass container.
Remove the chloroform from the product by blowing a “slow” stream of argon or nitrogen gas over the chloroform solution.
For a small aliquot (1ml-2ml) , the amount of time required is approximately 5 minutes.
The product will look waxy when completed.
To remove the last traces of chloroform put the container on a vacuum system for 1-2hrs.
Use argon or nitrogen to release the vacuum.