• 2 pint polybottle weighs 29.47g
• 2 litre Green-bottle (weight per 2 pints) weighs 70.2g
• 1 litre Ecolean Stand Up Pouch (weight per 2 pints) weighs 19.3g
• 2 pint Pillow Pouch milk bag weighs 5.3g

Source: Dairy Crest internal data, weights may vary