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National Water Quality Laboratory

Friday October 19, 2018

USGS Open-File Report 92-495

Quality Assurance/Quality Control Manual

Jeffrey W. Pritt and Jon W. Raese

1992

Quality control practices are established for the operation of the U.S. Geological Survey’s National Water Quality Laboratory. These practices specify how samples are preserved, shipped, and analyzed in the Laboratory. This manual documents the practices that are currently (1992) used in the Laboratory.

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