U.S. Geological Survey - Standard Reference Sample Project
Results of the Fall 2003 Inter-laboratory Comparison

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Method codes, abbreviations, symbols, formulas

List of participating laboratories

Sample preparation

Statistics and ratings

Most probable values (MPVs)

Overall laboratory performance ratings

Sample statistics:
| Trace (T-175) | Major (M-168) | Nutrient (N-79) | Nutrient (N-80) | Precip (P-41) | Mercury (Hg-37) |

(Note: Some of these links take a while to load)

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