The phrase "a concentration used" is correct and usable in written English.
It can be used in contexts where you are discussing a specific concentration of a substance or solution that has been applied or utilized in a particular situation.
Example: "In the experiment, a concentration used was 0.5 M sodium chloride to observe its effects on cell permeability."
Alternatives: "a utilized concentration" or "a concentration applied".
Some of those traces reached a purity of 90percentt, a concentration used in nuclear bombs.
After a 60 minute preincubation period (37°C, 5% CO2) in Krebs solution containing 2.7 mM glucose, insulin secretion was determined in presence of increasing glucose concentrations (2.7; 5.5; 11.1; 16.6 and 22.2 mM) or 100 µM glyburide, a concentration used in previous in vitro studies [50].
The effect of hHA was best seen at 400 μg/ml, a concentration used for further experiments.
However, it is possible that other unspecific damage to the electron transport enzymes may occur at the highest antimycin A concentration used.
For all experiments, BEAS-2B and MRC-5 cells were stimulated with 100 ng/mL of LPS obtained from Escherichia coli (Sigma-Aldrich, St Louis, MO, USA), a concentration used in previous studies for induction of inflammatory responses [ 18, 21] and validated to study LPS-induced effects [ 22].
The MERIS chlorophyll-a concentration used in this study was taken either from the algal pigment index 2 if the MERIS case 2 water flag was set or algal pigment index 1 otherwise.
Algal samples were analyzed for chlorophyll-a concentration using USGS methods (Yin 2005).
For all the chlorophyll-a concentrations used, significantly higher die-off rates of FC were observed in light compared to darkness (p < 0.001, Fig. 1).
Activity was decay corrected to the time of injection and converted into a concentration using the ex vivo tissue weight (in kilobecquerel per gramme).
Absorbance values were converted to coenzyme A concentration using a standard curve.
Injection of p53 morpholino (MO) or esco2 Cas9/guide RNA was performed on one-cell-stage zebrafish embryos at a concentration using 0.5 nl of 0.85 mM.
