The phrase "a blind sample" is correct and usable in written English.
It is typically used in scientific and research contexts to refer to a sample that is tested without knowledge of its composition to avoid bias.
Example: "In our experiment, we included a blind sample to ensure that the results were not influenced by the researchers' expectations."
Alternatives: "control sample" or "unlabeled sample".
Two specimens from each of the seven species and hybrid catfish (except C. bouderius and H. macropterus) were randomly selected by a third party for a blind sample test; with the blind sampling test yielding 100% correct species identification results.
A further sample without any organic material was used as a blind sample.
A sample would be labeled as "left-side child node" if the peak intensity of a blind sample was lower than or equal to the threshold.
SOD-like activity of the sample is determined by measuring the inhibition rate of diformazan production against a blind sample of non-SOD-like activity.
Their clinical study was based on the principles of a blind sample and involved evaluating through palpation the masseter and temporal muscles as well as the temporomandibular joints.
Bayesian-clustering applied on nSSRs of a blind sample of 648 specimens identified three major gene pools showing no or very limited introgression.
To test the efficiency of DNA barcoding as a species identification tool, a blind sampling test was conducted, in which samples, identity unknown except to the submitting individual, were selected and sequenced.
In CRNs, it is a very challenging topic to design a spectrum blind sampling-reconstruction system without knowing the locations of the bands.
Analysis of blind sample replicates indicated a relative percent difference (RPD) of 5 to 7 % for Hg.
The blind sample of 623 had a total of 77 samples from late‐fall run (data not shown).
The studies were conducted by a single physician and were based on the blind sample principle.
