There is two big problems with using sap to rinse the storage solution from your clean membranes. First of all, you are going to immediately dirty your clean membranes rinsing with sap and you are going to waste a lot of sap if you rinse your membrane with the recommended amount of liquid. One gallon of water per gallon of output for the machine. A 250 needs 250 gallons of water, a 600 needs 600 gallons and so on.
Joe
2004- 470 taps on gravity and buckets
2006- 590 taps on gravity and buckets 300 gph RO
2009- 845 taps on vacuum no buckets, 600 gph RO
2010- 925 taps on vacuum new 2 stage vacuum pump
2014- 3045 taps on vacuum, new 1200 gph RO
2015- 3104 taps on vacuum
2017- 3213 taps on vacuum
3' x 10' oil fired evaporator with steamaway