DIGESTING LACTOSE WITH LACTASE. Lab Conclusions. Background Information. Part A Directions. Fill each clean test tube with 1 mL of the sample to be tested.
Test tube 1: 1ml glucose solutionTest tube 2: 1ml milkTest tube 3: 1ml lactase solutionTest tube 4: 1ml milk plus 3 drops lactase solution (swirl gently to mix)