I've been trying to study and read all I can on waste disposal. But it seems as if I can't quite grasp what I need and where to get what I need to properly dispose of the waste. For instance where do I get soda ash, sodium hydroxide, and whatever else i need. I have a bucket of various spent acids that is close to being full. I've been trying to prepare so I can properly dispose of this waste but I'm not sure where to get said items. I have pH strips does that work? The acids in there or from AR and AP and nitric acid dilute that was used for silver. So it has silver nitrate as well. I don't know if I should have mix all of that together but I did. Copper sitting in with it for this whole time with an air bubbler. I have extra buckets. But since i don't have said chemicals i.e. soda ash. Anyone able to talk me thru this? Using the most basic of ingredients? And if i must get more things. Where can i get them? Thanks!