The phrase "adding a suitable amount of" is correct and usable in written English.
It can be used when discussing the process of including an appropriate quantity of something in a recipe, formula, or any context where measurement is relevant.
Example: "When preparing the sauce, make sure to focus on adding a suitable amount of salt to enhance the flavor."
Alternatives: "incorporating an appropriate quantity of" or "including a proper measure of".
The pH of the experimental solution was maintained by adding a suitable amount of 0.1 M NaOH and 0.1 HCl.
The purification of the ester was carried out by adding a suitable amount of charcoal to the prepared ester and refluxed for 3 h and then filtered off.
The ductile failure of such cement-based structures is ensured by adding a suitable amount of steel fibers to ordinary steel bars.
Working standard drug mixtures were prepared by adding a suitable amount of spiking solution to water.
The reaction was initiated by adding a suitable amount of cell extracts to the reaction mixture and the decrease in absorbance at 340 nm was determined to calculate NADH concentration.
If you have a saltwater tank, don't forget to add a suitable amount of marine salt every time you change the water to keep the tank at a proper salinity.
Depending on how little or much water your bottle will hold, add a suitable amount of salt: as a rough guide, use about 4 oz for every 8oz water.
The above results suggest that a suitable amount of EDTA added into the reaction system is essential for producing pure kesterite CZTS by the hydrothermal process.
To produce the latter, a suitable amount of hydrochloric acid is added to a nitric acid solution containing the bismuth, and the resulting solution is poured into a large volume of water, causing the oxychloride to precipitate.
During the reaction process, a suitable amount of NH4OH solution was gradually added into the mixture and the pH was maintained above 10.
As early as possible in the assay, a suitable amount of the chosen internal standard should be added to account for losses and errors introduced throughout the sample preparation process.
