The phrase "established sample" is correct and usable in written English.
It can be used in contexts where you refer to a sample that has been set up or recognized as a standard for comparison or analysis.
Example: "In our research, we used an established sample to ensure the reliability of our results."
Alternatives: "recognized sample" or "standardized sample."
Fine roots (<5 mm diameter) were collected from seventy randomly established sample plots, thirty five each in US and DS.
NFNAP was designed to sample and analyze frequently consumed foods in the U.S. food supply using statistically rigorous sampling plans, established sample handling procedures, and qualified analytical laboratories.
The tree biomass contained within US was estimated using 35 randomly established sample plots of 20 m × 20 m size determined by species-area curve method.
According to the established sample database, calculate the characteristic value of particle size and then adjust the proportion of different mesh quartz sand to make the characteristic value of particle size of prepared quartz sand consistent with reservoir.
With the previously established sample size of 95 patients and assuming the standard deviation (SD) being half of the costs, a difference in costs of 30%% could be analysed with a power of 80%%.
Moreover, the performance of established sampling plans is compared with that of the recently proposed approximation approach with full-ordered observed exponential data.
Fan et al. [32] proposed a compelling arrangement mining calculation to find vindictive quintal examples, and afterward, All-Nearest-Neighbor (ANN) classifier is constructed for malicious position in the established samples.
However, the survey was nationally representative and used established sampling techniques, and the examinations and diagnoses were undertaken by trained physiotherapists.
After histopathological diagnosis was established, samples from representative areas of the primary tumours showing macroscopical infiltration, were used to prepare single cell suspensions to be stored (−20°C) in methanol/acetic (3/1; vol/vol) for further iFISH analyses [14].
Dox-β had considerably lower plasma concentrations throughout the established sampling period as compared to the other two groups.
Using an established sampling technique, 24 two LGAs were selected from each tertile and invited to participate.
