If starting materials X, ending materials = x. What is done to safely dispose of ingredients?(i.e. MHRB / lye sludge) What is done to (safely) store reusable materials (i.e. naptha). Looking for both A/B and STB

personally... i use hdpe bottles for straight to base when im done i toss the bottle in the trash...
perhaps thats wrong... naptha evaps i reuse it multiple times and use clean naphtha for recrystallization the only thing i need to dispose of is the lye mix... which by the way i adjust the ph back by pouring half into another bottle and fill both with some vinegar... just how iv done it.. im sure down the drain works fine it just looks so black i get nervous *shrugs*

Once neutralized, pour it down the drain...

http://rehs.rutgers.edu/lswaste_drain.htm

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K