Delivery - the product?

For delivery: 5/5
For the product:
The instructions of the advocates Machine Delonghi descaling of marks (the "commercial" is not far!), And, ESPECIALLY NOT IN ANY CASE descaling>.
The "Amazon" site, descaling "AMBICLEAN" is claimed to be suitable, and Others, the Delonghi machines. BUT but ???
On the same product, not only there is no mention as to its utility descaling coffee machines (without quote marks), and it is written that there has from 5 to 15% ACID SULFAMIC !!
Only Amazon ethics "surcollée" (sticky paper) resumed the pre-pub site described (therefore without legal value?)!
CONCLUSION: one of 3 ment or exaggerating.
Delonghi -either by commercialism?. -either Ambiclean (who speaks a universal product, but without naming brands, Delonghi Others saw the presence of sulfamic acid?). -either Amazon (in his pub, possibly transcribed without verification and apose, despite everything, the prédécrite label on the product?.
NB:
1. I therefore postpones the use of this product and therefore can not evaluate it.
2. I bought (via Amazon) a descaling "EcoDecalk Delonghi" (see my reviews).
Sound assessments, in any case, can be the long term. The time to measure the impact, positive or negative, including the products of Marks ("Manager", perhaps, obsolescence caused by a descaling + / --- valid ??).