ISO 9001:2015

Altermij-De Gouwe has been ISO 9001:2015 certified since April 2016. With this certification, Altermij-De Gouwe complies with the international demands in the area of quality management. The ISO 9001 is an outstanding solution for quality and certification for over one million companies and organizations in over 170 countries and economies.

The ISO 9001 was developed based on a number of quality management principles that focused on process management, monitoring, continual improvement, the realisation of objectives and an active management. In short: a focus on the managing of results.


Our company has been in the possession of KIWA product certificate K88565/01 since December 2015.

KIWA attests with this certificate that we have a warranted trust that ADGs produces single and double panelled vertical cylindrical steel storage tanks to 150 m³ complying with the KIWA BRL-K756/02 quality requirements.

This, once again, proves that ADG considers quality to be of paramount importance.

KIWA BRL-K756 Verticale bovengrondse tanks

EHEDG bedrijfslid

Altermij-De Gouwe has been an EHEDG company member since 2014. EHEDG stands for: European Hygienic Engineering and Design Group.

The European Hygienic Engineering & Design Group (EHEDG) was founded in 1989 as a non-profit consortium of equipment manufacturers, food producers, suppliers to the food industry, research institutes and universities, public health authorities and governmental organisations.

The principal goal of EHEDG is the promotion of safe food by improving hygienic engineering and design in all aspects of food manufacture.

EHEDG actively supports European legislation, which requires that handling, preparation processing and packaging of food is done hygienically using hygienic machinery and in hygienic premises according to the food hygiene directive, the machinery directive and the food contact materials directive (see EC Directive 2006/42/EC for Machinery, EN 1672-2 and EN ISO 14159 on Hygiene requirements for the design of machinery).

Equipment manufacturers and users are responsible to implement these requirements and EHEDG provides them guidance on the essential hygienic design standards in compliance with national and international legislation.