billdlv, The Rollei instructions are at best misleading. I am sure that the 25ml will make 2 x 250ml working solution. The 20 roll kit makes 1000ml working solution but i believe both kits are made to make two sets of working solution therby the confusion about the qty in each.
The 10 roll kit = 2x250ml
The 20 roll kit = 2x500ml