Report on the U.S. Geological Survey's evaluation program for standard reference samples distributed in April 1994
Subtitle: T-129 (trace constituents), M-130 (major constituents), N-42 (nutrients), P-22 (low ionic strength), and Hg-18 (mercury)
By: by H. Keith Long and Jerry W. Farrar.
Contributors: Farrar, Jerry W.; Geological Survey (U.S.)
Series: Open-file report -- 94-369.; U.S. Geological Survey open-file report -- 94-369.
Publisher: U.S. Geological Survey
Published: 1994
Place of publication: Golden, Colo
Language: eng
Format: Microform
Number of pages: 101
Subjects: Sediments (Geology) -- Analysis -- Standards -- United States; Rocks -- Analysis -- Standards -- United States; Water -- Analysis -- Standards -- United States; Chemical laboratories -- United States -- Quality control
Notes: Chiefly tables.

Includes bibliographical reference (p. 10).

Microfiche. [Denver, Colo. : U.S. Geological Survey?, 1997?] 2 microfiches : negative.

s 1997 cou n b.