The phrase "duplicate specimens" is correct and usable in written English.
It can be used in situations where there are multiple copies or instances of the same sample or object. Example: The scientist carefully labeled and cataloged the duplicate specimens of the rare butterfly species before sending them to other research institutes for further study.
Duplicate specimens will be presented to the administration of Papua for a new museum.
Nonparametric analyses revealed there was no significant difference in colony counts between the 52 duplicate specimens.
The story of the selloffs began in 1950 when Keeper of Ethnography Hermann Braunholtz reported to BM trustees that of the 203 plaques acquired from the Foreign Office in 1898, "about 30 are to all intents and purposes duplicate specimens, and therefore surplus to the Museum's requirements".
For each cell type reported, at least 2 experiments were performed with duplicate specimens (n = 4).
Cells (biological duplicate specimens) were lysed and total RNAs were extracted using the RNeasy mini-kit (Qiagen, Inc .. RNA concentrations were estimated by absorbance at 260 nm.
Of these, 1,195 (30%) were randomly selected for influenza testing, and 1,157 duplicate specimens (97%) were collected from 989 children and tested by both rapid test and RT-PCR, while 38 children received a rapid test only (Figure 1).
To evaluate intra-individual variation in the signatures we identified, we used duplicate specimen samples from the same individuals.
A paired duplicate specimen comparison with the whole-blood method at Stanford Hospital Laboratories showed excellent correlation and precision.
A child was considered to have influenza if the viral culture was positive or the RT-PCR result was positive on the initial test and 1 repeat test using a duplicate specimen aliquot.
The samples were blindly scored, and when discordances between the duplicated specimens occurred an additional area was considered.
To measure the intralaboratory variation in mycobacterial colony counts, colony counts from duplicate blood specimens collected from 52 AIDS patients with MAC bacteremia were determined.
