The phrase "ascertained before" is correct and usable in written English.
It can be used when referring to information or facts that have been determined or confirmed prior to a certain point in time.
Example: "The results of the experiment must be ascertained before proceeding to the next phase of the project."
Alternatives: "determined earlier" or "confirmed beforehand".
After adjustment for infant mortality the completeness of the twin ascertainment is high with approximately 90%% twins ascertained before and up to 1968, and complete ascertainment of all live born twin pairs since 1968 [ 26].
Measures were ascertained before the intervention, directly afterwards and 1 year after the training.
"As long as he is in compliance with the law, that's fine with me," Mr. Bloomberg said, a fact he could have ascertained before starting a smear campaign.
Therefore, the module's docking status such as the docking orientation and the availability of docking ports must be ascertained before self-configuration takes place.
Implicit in the prohibition is the notion that individuals can be punished only in accordance with standards of conduct that they might have ascertained before acting.
A complete elucidation of nanoparticle toxicity needs to be ascertained before extensive manufacturing induced exposure.
Scale and track record are also essential to ascertain before investors are likely to get involved in this space.
Moreover, the department suggests ascertaining before the work begins that the electric service coming into the house is adequate for the job being done.
It is one thing for a manufacturer of household goods to seek to ascertain before going into production, whether housewives are more likely to be partial to one shape of frying-pan handle or another.
It is conceded that the Board had authority to provide an oath, as § 11 of the Act directs every agency of the State which appoints, employs, or supervises officials or employees to establish procedures designed to ascertain before a person is appointed or employed that he or she 'is not a subversive person.' And that term is, as noted, defined by §§ 1 and 13.
Through a DNA connection, you can also learn about close relatives who might have been a big part of your ancestor's life but whose names you could never ascertain before because no paper records of your relationship have been found.
