Have just started DD (6 months) on one bottle of formula in the evening (so dad can do the whole bedtime routine) and am confused by the instructions on the milton bottle - it doesn't take much these days! It says to use 2 caps of fluid - filled to the full line - for 5 litres of water. Simple enough but there are two lines inside the cap - an unbroken line near the middle of cap and a broken line near the top of the cap with no indication which is the 'full' line.
Does it mean full as in volume or full as in the type of line?