The phrase "at a sufficient amount" is correct and usable in written English.
It can be used when discussing the quantity or level of something that is deemed adequate for a particular purpose or requirement.
Example: "The study found that participants performed better when they received feedback at a sufficient amount throughout the experiment."
Alternatives: "in adequate quantity" or "at an adequate level".
The optimal depth of any suspended culture of algae cells should be equal to the maximum depth at which a sufficient amount of solar light can penetrate.
Some investors are interested on projects providing, at the end, a sufficient amount of benefits while in countries where the initial investment is crucial, the rapidity to get back the initial investment is an important criterion for the decision to invest into a project or not.
Thus, subjects found a new block pattern at the model area, a sufficient amount of blocks at the resource area, and an empty workspace area.
Or rather, at some point, does a sufficient amount of error about one's environment tend to compromise one's ability to form rational beliefs about that environment?
This can be achieved by maintaining the mouse at 2%% isofluorane for a sufficient amount of time (time for tail cannulation should suffice) and ensuring that there is no pain response.
The drawbacks of oral vaccination mainly consist in the difficulty of producing, at a reasonable price, a sufficient amount of a vaccine able to persist long enough in baits so as to be picked up by a suitable fraction of susceptible animals.
At the same time, a sufficient amount of Ret-NH2 can still be delivered to the eye for prolonged periods, resulting in effective protection of the retina from strong light-induced degeneration.
However, an important drawback of these described methods is the difficulty in activating the right process at the right location in the right cells at the right time for a sufficient amount of time, while minimizing adverse reactions [ 87].
It was further found that after thiopental induction, it was necessary to administer nitrous oxide for at least ten minutes before a sufficient amount of methoxyflurane could accumulate in the bloodstream to ensure an adequate level of anesthesia.
Specimens are not always collected from the appropriate anatomic site, at the appropriate time, in a sufficient amount, nor processed in an optimal fashion.
