The phrase "a lower amount of material" is correct and usable in written English.
It can be used when discussing quantities of material in a comparative context, indicating that one quantity is less than another.
Example: "The new design requires a lower amount of material than the previous version, making it more cost-effective."
Alternatives: "a reduced quantity of material" or "a smaller volume of material".
This initial burst of degradation caused by test item addition will leave a lower amount of degradable material within the sludge.
With regard to a lower amount of argillaceous material in the lower parts of the Dariyan Formation, gamma ray logs over the Lower Shu'aiba can reflect variations of uranium content of organic materials under reducing conditions (e.g., Wignall and Myers 1988).
First, small males may have finished mating earlier than standard-sized males because they were exhausted sooner or had a lower amount of sperm material available.
In order for the amount of hybridizing material generated from two samples to differ, the methylation state of the sample must yield, after HpaII digestion, a significantly higher or lower amount of material in fragments within the size range 80 to 2,500 bp from the test sample compared with the reference.
The thermal resistance is significantly lower for FP than for straight pipe exchangers, due to the lower amount of material consisting the FP for equal heat transfer surface.
Carbon fibers produced from lignin based materials require a lower amount of thermo-stabilization and possess high tensile strength [ 12].
This can be explained by the composition of this material which presents a lower amount of filler (42%wt) compared to other low viscosity resins (Filtek Flow Z-350: 65%wt).
A lower amount of 25-OH vitamin D could be associated with a lower amount of cathelicidin in cirrhotic patients.
Furthermore, the lower ash content of the sample indicated the presence of lower amount of inorganic material indicating its suitability as adsorbent (Zhang et al. 2015).
The explanation may be that when fewer fragments (lower amount of starting material) are competing for the reagents the likelihood that a single fragment generates multiple amplicons may increase.
