A&M Sugarworks Store › Brix SAP Hydrometer 0/15% Image 1 of 3 Image 2 of 3 Image 3 of 3 Brix SAP Hydrometer 0/15% $21.75 Hydrometer for measuring the brix of your sap. Quantity: Add To Cart Added! Hydrometer for measuring the brix of your sap.