Page history
4 September 2018
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added section for Similar Compounds
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26 June 2018
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21 December 2017
13 December 2017
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added justin Amaral anecedote on purgingf bottles with CO2
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29 November 2017
8 November 2017
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added reference to APY
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2 November 2017
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update "What We Known'; with the alkaline strip technique
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