* Initial pH nodes, and description changes to indicate pH
* Psychoactive and stimulant nodes, Medical foundation, bioreactive hint
* Added medical reagents to medical node. Added norepinephric acid to acidic and made up a pH
* Added pyrotechnic chem node, and corresponding hint
* spelled psychedelic correctly
* Fixed capitalisation skill issue
* fixed indentation skill issue
* fixed a further indentation skill issue
* Removed extraneous whitespace
* Replaced bioreactive with theraputic and psychoactive. Also fixed typo skill issue.
* removed unnecessary comment
* Replaced heartbreaker with THC for psychadelic
* removed artifexium from acidic
* added tran acid to acidic
* added more medical chems
* removed pH values
* removed all but medical
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