| Also known as SRM, International Standards or Certified Reference Materials (CRMs). The
actual material of this standard (eg, rock, mineral, water, etc) should be denoted
in material type. A homogenous material prepared under strict guidelines, divided
into numerous aliquots and sent to reputable laboratories world-wide to derive an
assigned value. The values for Standard Reference Materials are generally well known
published figures. The blended material is used by laboratories to calibrate instruments,
analytical techniques and to verify new or improved analytical techniques.
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