NEMI Method Summary


Method Summary Information

Method Number:

I-1312

Media:

WATER

Revision:

1985

Method Source:

U.S. Geological Survey (USGS)

Subcategory:

INORGANIC

Analytes in this method

Official Name:

Density, gravimetric

Descriptive Name

Density, dissolved water; gravimetric

Source Info:

USGS Branch of Information Services
Box 25286, MS 417
Federal Center
Denver, CO 80225-0286
Phone: 303-202-4700

Citation:

USGS Methods, Volume A1

103646

Byte file

Brief Method
Summary:

The density determination is based on the weight of a carefully measured volume of filtered sample at a given temperature. Densities are determined at 20^oC, the same temperature at which volumetric glassware is calibrated.

Scope And
Application:

This method may be used to determine the density of any water from which the suspended sediment has been satisfactorily removed.

Applicable
Conc Range:

None Provided.

Interferences:

The only significant interference with this method is suspended sediment, which may usually be removed by filtration, centrifugation, or flocculation. Precautions should be taken to minimize evaporation during removal of sediment.

QC Requirements:

None.

Sample Handling:

Container Description: 250 mL Polyethylene bottle. Treatment and Preservation: Filter through 0.45-um filter; using filtered sample to rinse containers.

Max Holding Time:

180 days

Relative Cost:

Unknown

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Method Summary Information