The phrase "a much greater quantity" is correct and usable in written English.
It can be used when comparing amounts or sizes, indicating that one quantity is significantly larger than another.
Example: "The new factory will produce a much greater quantity of goods than the old one."
Alternatives: "a significantly larger amount" or "a far greater volume".
Iran has produced a much greater quantity of enriched uranium, some of it at 20 percent purity, just a few technical steps from bomb grade; it has placed many more centrifuges deep inside a protected mountain at Fordo, near Qum; and it is facing increased sanctions that are causing severe economic distress.
Whole cell extracts of B. burgdorferi also modulated immune responses but required a much greater quantity of protein than needed for the OspA preparation.
Conversely, gal-3 is secreted in a much greater quantity by inflammatory cells that could affect – at least locally (i.e. at the pannus level) – chondrocyte survival.
We do not believe that the ER in Lrh-1 LKO mice is at a new equilibrium following stress for the following reasons: 1) Thioflavin T staining indicates a much greater quantity of protein aggregates in Lrh-1 LKO mice following ER stress.
They discovered that CA-MRSA strains produce peptides called phenol-soluble modulins (PSMs) in much greater quantities than do hospital strains.
More recently, however, the company has realised that a bigger advantage lies in volume - animals can secrete proteins in much greater quantities than machines.
But planters needed land on a much larger scale than did traders, and they needed labour in much greater quantities to work the plantations.
Two other red varieties – juicy, easy drinking Dolcetto and wilder, more acidic Barbera – are considerably cheaper and made in much greater quantities.
Under the administration's plan, the Pentagon would speed up the testing of another Lockheed Martin fighter, the F-35, which it plans to buy in much greater quantities.
In serum, there are actually two thyroid hormones, thyroxine and triiodothyronine, with the former being produced in much greater quantities than the latter.
