The phrase "a standard sample for" is correct and usable in written English.
It can be used when referring to a typical or representative example used for comparison or testing purposes in various contexts, such as scientific research or quality control.
Example: "The laboratory provided a standard sample for the analysis to ensure accurate results."
Alternatives: "a reference sample for" or "a benchmark sample for".
However, it is hard to find a standard sample for the in vivo measurement.
Here Q s is the quantum efficiency of the fluorescence for a standard sample for reference.
This advantage allowed more accurate calibration using paramagnetic oxide salts, such as Gd2O3, a standard sample for the calibration of conventional susceptometers.
A computerized search was performed to identify a standard sample for comparison (Sigma 56463: methyl stearidonate solution; Sigma L6503: methyl γ-linolenate solution for GC) (Sukatar et al. 2006).
The mixed E. coli samples are then extracted, yielding a standard sample for analysis and optimization.
During lunar x-ray fluorescence spectrometry, concurrent monitoring of solar x-rays as well as in situ calibration of x-ray fluorescence using a standard sample is performed for quantitative elemental analysis.
The presented estimate is based on a standard sample size calculation for a two-sample t-test with equal variances and a significance level of 0.05, using the variance estimated from an ANOVA of the 4-week data (n = 100).
A standard sample bracketing (SSB) method was used for analyses of matrix-free Zn standard solutions to obtain additional and precise isotope data that were used to evaluate the DS technique.
All the analyses were conducted on samples collected using a standard sampling method, except for temperature measurements which were performed in situ.
Since different sampling efforts were used in different LMEs, the number of taxa at each LME was interpolated using saturation curves (i.e., UGE method [47] for 999 permutations) for a standard sampling size of 20 replicates (1 m2 quadrats) per LME [48].
The number of taxa at each site was estimated using the same method of saturation curve, but in this case for a standard sampling size of 5 replicates (1 m2 quadrats).
