Refractometer Calculations?

[danno]

How do you do that calculation again?

What will my sugar reading be on my sap refractometer if my sap to syrup ratio is 40-1.

Before the cold snap my sap was reading 2.

[maplehound]

Divide your sugar content by 86. So at 2% sap it will be a 43-1

[danno]

I think I found my answer on the web. For anyone else interested. 2% sugar = 43/1 syrup to sap ratio. I'm bored awaiting the next sap run.

"Sap starts with a sugar content between 1 percent and 4 percent. The percentage of sugar content tells us approximately how many gallons of sap it will take to make a gallon of syrup.

For example, if the sap is 1 percent sugar, we would need 86 gallons of sap for one gallon of syrup. If the sugar content is 3 percent, we would only need 28.6 gallons of sap. The yield of sap varies from tree to tree, and is also dependent on weather. On average, the sap collected from one tree will make one quart of syrup".