Exact(17)
Calibration curve standard samples and quality control samples were prepared in replicates (n = 6) for analysis.
Calibration samples and quality control samples at low, medium and high concentration levels were prepared by fortifying 5 mL HPLC grade water with known concentrations of stanozolol and I.S. followed by LLE and LC-MS/MS analysis.
Concentration of major cations (Ca2+, Mg2+, Na+, and K+) were determined by flame Photometry and flame atomic absorption spectrophotometer (AAS).The initial physio-chemical characteristics of groundwater samples and quality of drinking and irrigation water were determined using the standard analytical methods (Table 1).
RNAseq data were obtained from 48 samples and quality controlled.
Samples and quality control samples were also in good concordance for these compounds.
Laboratory personnel were blinded to the case-control status of samples and quality controls.
Similar(43)
DNA was isolated from environmental samples and quality-checked as described previously [ 26].
The size of the sample and quality of the data produced was what finally convinced Cusu to back it.
As such, for DfE designers choosing to work with natural fibers, inconsistencies in the fabric surface resulted in the need for additional sampling and quality control.
Analysis of control sample and quality control data compiled over a 12-month period was performed.
The detailed sampling and quality assurance measures have been described in a previously published paper [ 23].
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