The phrase "a standard sample of" is correct and usable in written English.
It can be used in contexts where you are referring to a typical or representative example of something, often in scientific or technical discussions.
Example: "In our experiment, we used a standard sample of the material to ensure accurate results."
Alternatives: "a typical example of" or "a representative sample of".
The basis of the serial dilution technique is a comparison of a solution of the sample of material under test with a solution of a standard sample of known strength.
Using a standard sample of chemically well-defined liquids, the scientists also demonstrated that they could not only visualize but also quantify differences in their properties – information that can be applied to various body tissues and that is only obtained when combining all three tomography modes.
The dilatometer was calibrated using a standard sample of Al2O3.
Before and after analysis of the nanofluid samples, the accuracy of the probe was carefully checked on pure water, ethylene glycol, and a standard sample of glycerol of well-known thermal conductivity.
A standard sample of 2-MIB (100 ng· µl−1, Supelco, USA) was used to verify the results of GC-MS by comparing retention times and mass spectra.
A standard sample of human post-heparin plasma was run on each assay day and the value was used to calibrate for between-assay-variations.
This advantage allowed more accurate calibration using paramagnetic oxide salts, such as Gd2O3, a standard sample for the calibration of conventional susceptometers.
The second index is the number of haplotypes expected in a standard sample size of 10 individuals (determined by resampling); accordingly, in these comparisons, we included only samples with at least 10 individuals.
To allow comparison between different gels, a standard sample (a mixture of aliquots from 23 subjects) was run in duplicate on every gel and all samples were normalized against the mean of the standard sample.
We did this in attempt to select a "gold standard" sample of research in each area.
The spectrum of 4-ap was verified with that of a standard sample.
