The phrase "a standard samples of" is not correct in English.
It should be "a standard sample of" or "standard samples of." You can use the corrected phrase when referring to a typical or representative example of something in a specific context, such as research or quality control.
Example: "In our study, we collected a standard sample of the product to ensure consistency in our results."
Alternatives: "a typical sample 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.
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.
Expression levels of miRNAs were normalized to U6 and expressed as a fold change compared to the levels of a standard sample of SH-SY5Y or LA1-5s.
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.
Data were collected with a 2D photon counting Pilatus 1M-W pixel X-ray detector, which was calibrated with a standard sample of 5 mg/ml bovine serum albumin.
For example, assuming a standard sample of 20 'microsat' loci and N = 500, even a sample of only 25 individuals is sufficient to ensure that will almost never be <10% of N. Conversely, with N = 500 and S = 25, about 25 30% of the estimates exceeded 10 N = 5000, depending on the Pcrit value used.
Silicon AFM probe (Tap300-G, Budget Sensor) with resonant frequency of 300 kHz and a force constant of 40 N m−1 mounted on the AM FM cantilever holder was used for nanomechanical characterization; the tip calibration was performed using a standard sample of Matrimid5218 with an established Young's modulus (E = 4 GPa).
