The phrase "at varying quantities" is correct and usable in written English.
It can be used when discussing different amounts or levels of something, often in contexts related to supply, production, or measurement.
Example: "The factory produces the items at varying quantities to meet the fluctuating demand throughout the year."
Alternatives: "in different amounts" or "at different levels".
Biodiesel production process was carried out at constant temperature 60 °C, reaction time 1 h, and 5 g of carbon based catalyst at varying quantities of catalyst loading (0.5, 2, 3.5, 5 wt%) and methanol to oil ratio (5:1–20:1).
In mammals, PPT1 expression is found in all cell types at varying quantities with the highest levels in the brain, eye, and spleen [5], [6].
As one historian has noted, "He drank at irregular intervals, in varying quantities, and with differing results".
Furthermore, the S/Cl ratios of unpristine samples are dissimilar to those of pristine tephra, perhaps reflecting the dissolution of S- and Cl-bearing compounds at different rates or in response to varying quantities of rainfall.
Physical samples for testing are available at the various research labs in Cameroon in varying quantities.
Therefore, we measured the degradation of a 73 bp target in 90% Taq storage buffer supplemented with 10 mM MgCl2, 1 mM CaCl2 and 1 mM DTT using varying quantities of hl-dsDNase for 30 minutes at 25°C (Figure 3).
It is better to push a "total diet" – eat anything, but in varying quantities.
Dr. Jacobson's study included cocaine users who also used varying quantities of alcohol.
By exploiting those gaps, continuously varying quantities can change sign without passing through zero.
They can either employ more labour or invest in new capital (although more often than not they will do both in varying quantities).
So fish, beef and chicken through the nutritionists' lens become mere delivery systems for varying quantities of fats and proteins and whatever other nutrients are on their scope.
