Preparing your own Chromatotron Plates - Part 4
Step Nine

Weigh out 33 grams of the silica gel into a wide mouth mason jar
carefully under a fan hood.

Step Ten

Add 18 grams of the calcium sulfate hemihydrate.

Step Eleven

Add 82 mL of cold (0-10oC) deionized water.

Step Twelve

Cap the jar and shake vigorously for no more than 10 seconds to
prevent the mixture from setting up..

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