| 1.22 | internal standard | ||
| Component used for reference present in or added to a sample to perform calibration, to assist in the identification of a chemical species, or as part of procedure validation. | |||
| Note 1: | An internal standard provides an indication that varies in the same way as that of the analyte during chemical analysis. The ratio of the indications for analyte and internal standard provides a quantity value that can be used in calibration. | ||
| Note 2: | In multicomponent mixtures, a component that is known to be in constant concentration or content across samples can be used as an internal standard. | ||
| Note 3: | An added internal standard may be a spike. | ||
| 1.22 | internal standard | ||
| Component used for reference present in or added to a sample to perform calibration, to assist in the identification of a chemical species, or as part of procedure validation. | |||
| Note 1: | An internal standard provides an indication that varies in the same way as that of the analyte during chemical analysis. The ratio of the indications for analyte and internal standard provides a quantity value that can be used in calibration. | ||
| Note 2: | In multicomponent mixtures, a component that is known to be in constant concentration or content across samples can be used as an internal standard. | ||
| Note 3: | An added internal standard may be a spike. | ||