Reagent color chart for controlled substances.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...t_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...olor_chart.jpg
Previously:
https://www.homemadetools.net/forum/...783#post194119
https://www.homemadetools.net/forum/...003#post137753
https://www.homemadetools.net/forum/...160#post153697
https://www.homemadetools.net/forum/...569#post147437
https://www.homemadetools.net/forum/...934#post137540
