The phrase "a very substantial quantity of" is correct and usable in written English.
It can be used when describing a large amount of something, often in formal or academic contexts.
Example: "The research study revealed a very substantial quantity of data that supports the hypothesis."
Alternatives: "a significant amount of" or "a considerable quantity of".
If we would open up our borders to skilled labor far more than we do, we would attract a very substantial quantity of skilled labor which would suppress the wage levels of the skilled, because the skilled are essentially being subsidized by the government, meaning our competition is being kept outside the country.
Analysis of documentary evidence Internal documentation The TPI review team was provided with a very substantial quantity of documentation both from the review management team and from senior individuals in each of the partner agencies.
Even if observations may be more doubtful than from other datasets (i.e. there is no way to check data a posteriori), these rapid botanical surveys provide the very substantial quantity of data required to enhance our understanding of species distribution (Guitet et al. 2014).
The CPS letter to the family stated: "As you will be aware this is a very substantial case with a significant quantity of third-party material in addition to the IPCC case file and the enquiry report.
The Norman Conquest and a period in which French was the language of the ruling class in England effected great changes on English and contributed a very substantial number of French words to English vocabulary hence the quantity of near synonymous pairs available today: begin, commence; end, finish; kingly, royal; fight, combat; and so on.
I have a very substantial chance of winning.
Will standardizing date labels really save a substantial quantity of food?
It was observed that the layers of the fibers are not perfectly aligned and uniform and there is a substantial quantity of voids resulting in a very heterogeneous material which can explain the scatter of the experimental results.
"I think it's a very good thing actually, it's good for the local area and it could be very good for Northern Ireland as a whole if indeed there is a substantial quantity of oil found".
A "substantial" quantity of Class A drugs have been seized by police as part of the ongoing operation to combat organised crime across north Wales.
