You can just buy them from a chemical supply company. They won’t sell to an individual but it’s not that difficult to set up a company and do the necessary paperwork to handle them. There are also chemical waste processing services that will pick up your used chemicals and dispose of them properly – neutralizing acids and bases and incinerating organic solvents.
Handling the chemicals safely is another matter entirely, as is the cost of both the equipment and materials, although if you watch business auctions you can pick up a lot of equipment for pennies on the dollar.
