I would imagine the bag will have the mixing requirements on it.
The one I use is 4.5 litres of water to mix the whole bag, and I keep an old juice bottle in my van to make sure I can measure it out, as SLC is the only thing I mix to the exact instructions
My wife went off her head when she went to get her mixing jug from the kitchen cupboard!!!
Erm, sorry but it's in my van don't think you will want it back.
Had to buy her a nice new one.
