expensive but very effective

After purchasing a new coffee maker Saeco HD8751 / 95 Intelia Evo Focus fully automatic coffee machine (1850 W, 1.5 liters of water) black I have, as recommended, gained this descaler.
For descaling the entire contents is dumped into the water tank, filled with water and start the descaling program.

Unlike cheaper decalcifiers from discounters remain no residue in the machine, ie the coffee tastes of the first cup again as usual.
Certainly an expensive product, but the inner workings of my expensive machine was worth it to me.