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internal standard

   Also found in: Acronyms, Encyclopedia, Wikipedia 0.01 sec.
internal standard,
an element or compound added in a known amount to yield a signal against which an instrument or an analyte to be measured can be calibrated.


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? Mentioned in ? References in periodicals archive
 
RNA amplification by nucleic acid Sequence-based amplification with an internal standard enables reliable detection of Chlamydia trachomatis in cervical scrapings and urine samples.
Real-time polymerase chain reaction to diagnose lymphogranuloma ... by Pena, A. Salvador / Emerging Infectious Diseases
The internal standard (perfluorodecanoic acid) was purchased from Lancaster Company, Inc.
Perfluorooctane sulfonate (PFOS) and related perfluorinated compounds ... by Nakazawa, Hiroyuki / Environmental Health Perspectives
In addition, a gravimetric solution of two compounds not detected in each Aroclor was prepared for each analysis for use as an internal standard solution (methanol) or transformer oil (Figs.
Standard Reference Materials (SRMs) for the calibration and ... by Wise, Stephen A. / Journal of Research of the National Institute of Standards and Technology
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