The phrase "a quantity for" is correct and usable in written English.
It can be used when specifying a measurement or amount related to something, often in scientific or mathematical contexts.
Example: "We need to determine a quantity for the required materials before starting the project."
Alternatives: "an amount for" or "a measure for".
The question 'how much', by contrast, requires a quantity for an answer, and so on.
A balance equation can be written either for a quantity for which a general principle of conservation exists, or for a quantity for which no such principle exists provided its rate of generation is included in the balance equation.
The ideality factor n is a quantity for describing the deviation of the diode from an ideal Schottky barrier for which n = 1.
Aircraft cabin noise due to the fuselage boundary layer is determined by, among other factors, the wavenumber frequency spectrum of the fluctuating boundary layer pressures, a quantity for which a number of models have been proposed.
The mean value of this distance measure J ~ i, m ( ℓ, k ) over the relevant subbands is a quantity for the detection of the activity of the m th speaker: J ¯ i, m = 1 N i, m ∑ k = 0 K / 2 J ~ i, m ( ℓ, k ) · I i, m ( ℓ, k ), (70).
The effective dose is primarily intended as an important parameter for the planning and optimization of radiation protection and not as a quantity for individual risk estimates, as patient-specific parameters may vary significantly from the assumptions made in the risk models [1].
They have a quantity of unique resources for this aim.
But it is not clear if Ohio and Texas were enough to give Mrs. Clinton — a politician who has been a known quantity for 16 years— a real chance for a fresh assessment by the many superdelegates who know her well.
If you know someone else who grows vegetables (and they are high quality), have your parents help your purchase a large quantity (for a considerable discount).
A characteristic frequency intensity coefficient (CFIC) is defined as a quantity criterion for assessing the effectiveness of the filters.
A quantity adjusting for the subsequent remissions called current leukaemia-free survival (CLFS) was proposed in the literature [ 10].
