I have an ULTIMATE 6 pot (quart size pots, 3 on each side) tint unit for sale. This has dual thermostat settings which enable you to turn one side on or the other independantly without having to heat up all the tints to use one color. Unit was purchased new when installed in our lab two years ago and is in perfect working order. I took notice at Expo East new units like this are touching $800.00 Asking $500.00. email me opticare@epix.net if interested.