Washing machine: place 1000ml in the washing machine and start a 60 degree wash cycle with no washing in the drum.
Dishwasher: place 1000ml in the dishwasher and start cycle without any dishes in the machine.
Coffee machine: let 200ml of descaler and 800ml of water run through the machine. Afterwards run clean water through the machine until the water runs clear. Always observe the manufacturer's instructions.