certified
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certified
Describes that a person, product, or process has been officially inspected and meets certain quality standards or requirements. This is confirmed by a certificate.
Dieses Produkt ist bio-zertifiziert und frei von Pestiziden.
This product is organic-certified and free of pesticides.
'Zertifiziert' (certified) is the past participle of the verb 'zertifizieren' (to certify). It is used like a normal adjective and appears either before a noun or after verbs like 'sein' (to be).
Wir verkaufen nur zertifiziertes Holz.
We sell only certified wood.
'Zertifiziert' (certified) is very often used with the preposition 'nach' (according to) and a norm or standard. This indicates which criteria were met during the inspection.
Unser Unternehmen ist nach ISO 9001 zertifiziert.
Our company is certified according to ISO 9001.
The word is often used as part of compounds to describe a specific type of certification. Common examples are 'bio-zertifiziert' (organic-certified), 'TÜV-zertifiziert' (TÜV-certified), or 'fairtrade-zertifiziert' (fair-trade certified).
Immer mehr Kunden achten darauf, ob Produkte bio-zertifiziert sind.
More and more customers pay attention to whether products are organic-certified.
recognized
'anerkannt' and 'zertifiziert' both have to do with quality, validity, or official confirmation. 'zertifiziert' is more specific: a person, product, or process has been checked and meets certain standards; there is usually a certificate for this. 'anerkannt' is broader. It can mean that something is officially valid, but also that someone is generally valued because of good performance. The words can be confusing because both sound official. If an inspection with a certificate is important, 'zertifiziert' fits better. If it is about general validity or a good reputation, 'anerkannt' is more natural.
Die Schule arbeitet nur mit zertifizierten Sprachlehrern.
The school works only with certified language teachers.
Mein Kollege gilt in der Firma als anerkannter Fachmann für Technik.
My colleague is considered a recognized expert in technology at the company.