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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Report of the Usgs's Evaluation Program for Standard Reference Samples Distributed in April 1993: T-123, T-125, M-126, N-38, N-39, P-20 and Hg-16: Usg

Report of the Usgs's Evaluation Program for Standard Reference Samples Distributed in April 1993: T-123, T-125, M-126, N-38, N-39, P-20 and Hg-16: Usg

Long, H. K.
Farrar, J. W.

Paperback

General Political Science

ISBN10: 1288955502
ISBN13: 9781288955503
Publisher: Bibliogov
Published: Mar 20 2013
Pages: 158
Weight: 0.65
Height: 0.34 Width: 7.44 Depth: 9.69
Language: English
This report presents the results of the U.S. Geological Survey's analytical evaluation program for seven standard reference samples--T-123 (trace constituents), T-125 (trace constituents), M-126 (major constituents), N-38 (nutrients), N-39 (Nutrients), P-20 (precipitation-low ionic strength), and Hg-16 (mercury)--that were distributed in April 1993 to 175 laboratories registered in the U.S. Geological Survey sponsored interlaboratory testing program. Analytical data received from 131 of the laboratories were evaluated with respect to: overall laboratory performance and relative laboratory performance for each analyte in the 7 reference samples. Results of these evaluations are presented in tabular form. Also presented are tables and graphs summarizing the analytical data provided by each laboratory for each analyte in the seven standard reference samples. The most probable value for each analyte was determined using nonparametric statistics.

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