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a sample acquired or prepared that has known properties for the purpose of calibrating equipment and/or for use as a control in experiments
- Browse Related Terms: Blind or Double-Blind Sample Technique, Calibration, External Proficiency Test, Internal Proficiency Test, Known sample, Open Proficiency Test, Proficiency Test, Reference Standard, reliability, Serology, Supervised Casework, Toxicology (forensic science discipline)