"at the same concentrations" is grammatically correct and is commonly used in written English.
You can use it to compare two or more substances at equal levels or levels that are being measured. Example: "In order to accurately compare the effects of different treatments, the experiments were conducted at the same concentrations of the respective substances."
Additionally, fraction E showed stronger antioxidant activity than cataposide, amphicoside and verminoside at the same concentrations.
The viscosity of the ε-Fe3N magnetic fluid at the same concentrations is measured.
Ascorbic acid at the same concentrations was used as the reference antioxidants.
Electrodes are also prepared using the 'physical mixture' of the same constituents at the same concentrations.
Approximative data of isothermal diffusion coefficient at the same concentrations are equally given.
Finally, the X-ray attenuation of prepared chitosan coated tungsten trioxide NPs are higher than Iohexol as the commercially available iodinated contrasting agent at the same concentrations.
Peptide-induced AgNPs exhibited good antibacterial activity, even after a 15 min contact time, while they had low toxicity to human cells at the same concentrations.
While suspended CNT-bundles were less cytotoxic than asbestos, rope-like agglomerates induced more pronounced cytotoxic effects than asbestos fibres at the same concentrations.
Instead, HTCC inhibited the proliferation at the same concentrations but accelerated the proliferation of HPDLCs at relatively low concentrations (10, 3, 1.5, 1, and 0.3 μg/mL).
The dimethoate pre-exposure increased the impacts when the F1 generation rotifers were exposed to the substance, even at the same concentrations as in pre-exposure.
Researchers have used the animals for decades to figure out how anesthetics work, because the drugs elicit the same effects, at the same concentrations, in many different organisms.
