As a guidance use 3 -5 ml for 10 litres of milk. Curdling may differ depending on type and quality of the milk. Always follow your recipe.
Ingredients: Chymosin 95%, Pepsin 5%, contains 1gm/L Sodium Benzoate (E211) as a preservative
Best before 12 months from the date of manufacture if stored in a cool dark place (fridge)