The phrase "a specific concentration of" is correct and usable in written English.
It can be used when discussing the amount or level of a particular substance or element in a solution or mixture.
Example: "The experiment required a specific concentration of sodium chloride to achieve accurate results."
Alternatives: "a precise level of" or "a defined amount of".
All applicants must apply to a specific concentration of the program and must indicate this choice in their statement of purpose.
The catalysts presented a bifunctional character with a maximum of activity at a specific concentration of metal and particle size.
British proof is based on a specific concentration of alcohol, a 50 percent alcoholic content being equivalent to 114.12 U.S. proof.
The loss of Ca and Fe ions that takes place, even when an isotonic solution is used, has to be taken into account when preparing the impregnating solution, mainly when a specific concentration of minerals in the final product is required.
Their dependence on the electrolyte concentration was well explained by the existence of a maximum in the rate of oxide dissolution in an open circuit at a specific concentration, of a maximum in the electrical conductivity at another specific concentration, and of some resulting slight changes of the temperature inside the pores and oxide bulk during anodization.
In an experimental study, it was found that the lack of calcium concentration in the wound helped 'gelling' of the alginate dressing, while the presence of a specific concentration of calcium ions prolonged the degradation time of the gel (Ichioka et al. 1998).
Exposure is a function of concentration and time: "An event that occurs when there is contact at a boundary between a human and the environment with a contaminant of a specific concentration for an interval of time" (NRC 1991).
These are devices that are selectively induced within a specific concentration range of the input signal.
This implies that the propagation velocity is maximized at a specific concentration gradient regardless of the fuel dilution.
In this cross validation, each concentration was defined as a class, and when a sample of a specific concentration was predicted all samples of that concentration were left out of the calibration model.
The formation of clumps at a specific concentration may simply be a consequence of localized accumulation of nematodes as high concentrations of nematodes promote clumping.
