Aqua-plus pipes meet and exceed the specifications set by European Standards: the internationally accepted German DIN, Spanish UNE and British BS standards. As a result Aqua-plus present not a single failure in the regular biannual tests carried out by official institutes on random samples taken from production and the warehouse. The outcome of all the above is that Aqua-plus has been certified as a final product by the following organizations.

. ISO 9001 by TUV Germany for compliance with all international specifications pertaining to Aqua-plus.
. SKZ Germany and AENOR Spain for the mechanical strength of the pipe. Checking of pipe dimensions, microscopic homogeneity check, testing under pressure at various temperatures and checking linear expansion.
. DVGW Germany and WRAS-NSF Great Britain for suitability of Aqua-plus pipes for drinking water. Tests carried out at 20°C and 80°C on taste, odour, development of microorganisms, extraction of substances and metals dangerous for public health (cadmium, arsenic etc.)

The pipes are also checked by ELOT (Hellenic Organisation for Standardisation) under pressure at 110°C in long-term tests and by the State General Laboratory for suitability for drinking water.