2016-03-29 at 10:28 PM UTC
I'd have an incinerator on site and have surveilance cameras covering the whole perimiter and have somebody watching them at all times, ready to sound an alarm if theres about to be a raid.
2016-03-29 at 10:33 PM UTC
Incinerators take a lot of time to start up and get to a good enough heat.
What you want is a waste disposal well that can drain a few hundred gallons of wastewater per hour. Every pharmaceutical manufacturing facility on the planet has these waste wells and you are legally allowed to dump mercury, solvents, organic waste and all kinds of crud deep into the earth where it becomes a problem no more.
Also modern, licensed facilities don't use glassware like flasks, instead they use giant automated specialty chemistry machines that can react hundreds of kilograms of API grade products all at once and these machines are piped into gases, totes and most have a direct pipe for waste that just gets dumped as hazmat if its not recycled.
There are factories in India set up like this and in the clandestine chemistry community it is thought that these folks can easily cook hundreds of kilos of methamphetamines and if there is a raid press a single large red button that mixes everything with a bunch of waste and dumps it before anyone gets cuffs on them or stops production.