Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in October 1992, T-121 (trace constituents), M-124 (major constituents), N-36 (nutrients), N-37 (nutrients),   P-19 (low ionic strength) and Hg-15 (mercury)
By: by H. Keith Long and Jerry W. Farrar.
Contributors: Farrar, Jerry W.; Geological Survey (U.S.)
Series: U.S. Geological Survey open-file report -- 93-32.
Publisher: Dept. of the Interior, U.S. Geological Survey; Books and Open-File Reports [Section, distributor]
Published: 1993
Place of publication: Golden, Colo; Denver, CO
Language: eng
Format: Microform
Number of pages: 114
Subjects: Laboratories -- United States -- Management.; Water quality -- United States -- Measurement.
Notes: Distributed to depository libraries in microfiche.

Shipping list no.: 93-1307-M.

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1993] 2 microfiches : negative.