'very low proportion' is a perfectly correct phrase to use in written English.
It can be used to describe a situation in which a comparatively small number makes up the total amount. For example, "Despite efforts to increase diversity, the company has a very low proportion of female employees."
Indigenous hydrous oxides indicate the presence of copper, whereas transported hydrous oxides indicate its absence or its presence in very low proportion to iron and manganese.
People who try this curd tend to do a double take; the taste of the original lemon version is extremely delicate and aromatic, with a very low proportion of fat.
A very low proportion of total bacteria was actively respiring (ca. 16%).
The Sudan Household Survey (SHHS) shows a very low proportion of institutional delivery (20%%).
In percentage terms they remain a very low proportion of the UK".
The very low proportion of patients with adverse events confirms the safety of viscosupplementation in knee osteoarthritis.
The English uplands are characterised by open landscapes of moorland peaks and pastoral farmed valleys with small woods and a very low proportion of cultivated land.
In all countries, most patients were rated as being 'highly compliant,' followed by 'moderately compliant'; low and noncompliant ratings constituted a very low proportion at baseline.
However, the size of the geographic market also varies substantially in-between diagnoses that are characterized by a very low proportion of emergency admissions.
Ellis (2005) also showed that farmers in semi-arid areas of Africa are able to market only a very low proportion of their output.
Silane addition in a very low proportion improves the adhesion between the filler and the polymer and enables composites to be used where otherwise they could not.
