The phrase "already been certified" is correct and usable in written English.
It can be used when indicating that something has received certification prior to the current moment.
Example: "The product has already been certified for safety and quality standards."
Alternatives: "previously certified" or "certified already".
They had already been certified as organic by one of the independent local agencies that are now authorized to grant federal certification.
About 115 schools nationwide have already been certified as meeting the standard, she said, and the number of those interested is growing every year.
One American film, Harmony Korine's 1999 "Julien Donkey-Boy," and one French film, Jean-Marc Barr's "Lovers," have already been certified by the Dogma politbureau.
Meanwhile, the Australian government had already begun implementing its part of that deal, under which 4,000 refugees who had already been certified by the United Nations in Malaysia would be resettled in Australia.
She is on tour to promote "Red" (Big Machine), her fourth album, which sold 1.2 million copies in its first week of release last October, and has already been certified four times platinum.
Several types of temporary work visas require college or advanced degrees or professional expertise, and immigrants who are working as doctors and nurses in the United States have already been certified by American medical boards.
These folks must already be certified financial planners, public accountants or, strangely enough, teachers of any subject (including gym?).
If Trump dropped out in late August, his name would already be certified to appear as the Republican candidate for president in at least 18 states.
Sikorsky's helicopter already had been certified by the Federal Aviation Administration, while AgustaWestland's was not.
But, importantly, what we use to certify, rectify or mystify need not itself already have been certified, rectified or mystified.
Since the homes we offer on Roofstock are already rented, and the tenants have been certified to ensure an acceptable income to rent ratio and payment history, this provides an additional level of comfort for investors not available on other platforms.
