We tapped trees for the last few days and have our first sap collection — thirteen five-gallon buckets (not completely full, but around 4.5 gallons per bucket … so not 65 gallons but at least 58.5 gallons) waiting to run through the reverse osmosis.

This year, our starting sap measured around 1.006-1.008 SG at around 50 degrees. The reverse osmosis is running at just under 100 psi (at 100 psi, we are not getting any sugar water out). The output sugar water is measuring at 1.022 … which is 3.7 times as concentrated as before we filtered the sap.

The flow rate is about a gallon every ten minutes, or six gallons an hour.