Quantity: 5g Working Concentration: 0.05 – 0.1% pH: 5.5 – 6.5 Temperature °C: 25 – 55 Substrate: Fresh milk Product: Caseinogen forms casein Source: Calf stomach Notes: Causes milk to gel These enzymes should be stored in a refrigerator at 4 °C. This should ensure a shelf life of up to 12 months.