Investigating decay required practical.

Equipment:

• Lipase solution.
• Test tube x2.
• Milk.
• Phenolphthalein indicator.
• Sodium carbonate
• Water bath.
• Thermometer.
• Calibrated dropping pipette.
• Stopwatch.
• Glass rod.
• Ice.

Method:

1. Measure out 5cm cubed of lipase solution and add it to a test tube. Label this tube with an 'L'.

2. Measure out 5cm cubed of milk into a different test tube.

3. Add 5 frops of indicator to the milk tube.

4. Then measure out 7cm cubed of sodium carbonate into the milk tube…