The phrase "a modifying agent" is correct and usable in written English.
It can be used in contexts where you are discussing something that alters or influences another element, such as in scientific or technical writing.
Example: "In the chemical reaction, a modifying agent was added to enhance the reaction rate."
Alternatives: "an altering factor" or "a modifying factor".
The beneficiation of a low grade niobium tailings by flotation using benzohydroxamic acid (BHA) as a collector and sodium hexametaphosphate (SHMP) as a modifying agent has been studied.
We examined the feasibility of using limestone powder (LS) as a modifying agent in self-compacting concrete in which a portion of the fine aggregate was replaced with untreated rice husk ash (RHA).
In this study, the suitability of a reactive polymer, synthesized by reaction of 4,4′-diphenylmethane diisocyanate (MDI) with a low molecular weight polyethylene-glycol (PEG), as a modifying agent for the manufacture of bitumen-based waterproof membranes, was evaluated.
PMPS fluid (Zaporizhzhya, Ukraine, PMPS 4, GOST 15866-70) was used as a modifying agent.
Our choice of nitric acid as a modifying agent is caused by the following circumstance.
Novel sunflower-like organic inorganic composites consisting of spherical silica and smaller conductive polypyrrole particles were successfully prepared through an in situ self-assembly polymerization process by choosing chitosan as a modifying agent of silica surface.
In this work, we tested an ethanol extract of Turnera ulmifolia as a resistance modifying agent in an aminoglycoside-resistant strain of S. aureus.
Previously, no benefit could be demonstrated in a phase 3 study in unselected NSCLC of the addition of a hypoxia modifying agent (nitroglycerine) to a bevacizumab containing chemotherapy regimen [34].
The gas stream was adsorbed by a porous adsorbent material having a surface modifying agent.
The silica particles were prepared in basic conditions under atmosphere of carbon dioxide (CO2), using tetraethylorthosilicate (TEOS) as a precursor and octyltriethoxysilane (OTES) as a surface modifying agent.
These data, taken together, support a potential role for 2ME2 as a disease modifying agent for rheumatoid arthritis.
