| 1.42 | spike | ||
| Material with known quantity values added to an analytical sample. | |||
| Note 1: | The material can be a reference material or a certified reference material. | ||
| Note 2: | The known quantity value is often a fraction or concentration. | ||
| Note 3: | A spike may be used to estimate recovered quantity value ratio or compensate for systematic measurement error. | ||
| Note 4: | “Spike” used as a verb is the addition of a spike to a sample. | ||
| 1.42 | spike | ||
| Material with known quantity values added to an analytical sample. | |||
| Note 1: | The material can be a reference material or a certified reference material. | ||
| Note 2: | The known quantity value is often a fraction or concentration. | ||
| Note 3: | A spike may be used to estimate recovered quantity value ratio or compensate for systematic measurement error. | ||
| Note 4: | “Spike” used as a verb is the addition of a spike to a sample. | ||