NIST-7

NIST-7 refers to a specific standard reference material (SRM) developed by the National Institute of Standards and Technology (NIST). It is a part of the NIST SRM program, which provides materials with known properties that can be used for calibration, validation, and quality assurance in various analytical applications. NIST-7 is a standard reference material for testing and calibrating analytical methods, particularly in fields like chemistry and material sciences.