We have a 6 post H2O Supra Reverse Osmosis for sale. We have used it for 3 seasons. Works great, we are just looking to upgrade to a larger machine. It will process sap from 1-2% to 18-20% at just under 2000gph. At this rate it makes roughly 180 gallons of concentrate per hour. Comes with H2O membranes that have been used for the 3 seasons. Asking $35,000 or best offer.