The phrase "a measured quantity of" is correct and usable in written English.
It can be used when referring to a specific amount of something that has been carefully determined or quantified, often in scientific or technical contexts.
Example: "In the experiment, we added a measured quantity of salt to the solution to observe the reaction."
Alternatives: "a specific amount of" or "a precise quantity of".
The intersection of a measured quantity of entrapped mercury with the characteristic entrapment function yields two estimates of pore connectivity for the model network.
A measured quantity of corncob was collected, sprinkled with a kerosene fuel and set on fire.
The aqueous standard was prepared by spiking a measured quantity of methanol standard into a 100 mL volumetric flask filled with reagent water.
The test protocol involved taking a measured quantity of 800 ml of the 0.25 % suspension in 1,000 ml Scott Duran glass beaker.
Hidy et al. (2010) measured density by inserting a pliable plastic bag into the sampling hole and filling it with a measured quantity of water to determine the volume of the excavated mass of rock.
The calibration factor estimate was obtained based on acquisition of an image of a vial containing a measured quantity of the radionuclide of interest before each patient image acquisition.
By determining the differences ΔM of a measured quantity M, which may be spectroscopic absorption, weight increase or any other concentration-dependent quantity, as a function of time, the diffusion coefficient can be determined.
For instance, development of cumulative installed PV capacity is not a measured quantity, but often rather estimated at country levels by performing surveys among select PV suppliers and extrapolating the resulting data.
Because this analysis considered all measured quantities of each type, it provided a more general overview than the multi-factor ANOVA analysis.
The measured quantity of a specific gene's mRNA in each of the treated samples was normalized using the comparative threshold (Ct) values obtained for the actin mRNA amplifications run in the same plate.
The measured quantity of a specific gene mRNA in each of the treated samples was normalized using the comparative threshold (Ct) values obtained for the actin mRNA amplifications run in the same plate.
