ASTM D1429-13

Standard Test Methods for Specific Gravity of Water and Brine (Withdrawn 2022)

ASTM International, 06/01/2013

Publisher: ASTM

File Format: PDF

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Description

Published:01/06/2013

Pages:6

File Size:1 file , 110 KB

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1.1 These test methods cover the determination of the specific gravity of water and brine free of separable oil, as follows:

	Sections
Test Method A-Pycnometer	7 to 11, 21
Test Method B-Balance	12 to 16, 21
Test Method C-Erlenmeyer Flask	17 to 21
Test Method D-Hydrometer	22 to 27

1.2 Test Methods A and B are applicable to clear waters or those containing only a moderate amount of particulate matter. Test Method B is preferred for samples of sea water or brines and is more sensitive than Test Method D which has the same general application. Test Method C is intended for samples of water containing mud or sludge.

1.3 It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices.

1.4 The test method was tested at 22°C over a range, shown in Tables 1-4, of 1.0252 through 1.2299; all data were corrected to 15.6°C (60°F).

TABLE 1 Determination of Precision and Bias, Pycnometer Method

Calculated Specific Gravity	Specific Gravity Experimentally Determined	S_T	S_O	% Bias	Statistically Significant (95 % Confidence Level)
1.0247	1.0262	0.00145	0.00023	−0.049	yes
1.0648	1.0665	0.0012	0.00019	+ 0.16	yes
1.1100	1.1119	0.0010	0.00034	+ 0.17	yes
1.2299	1.2235	0.0012	0.00037	−0.52	yes

TABLE 2 Determination of Precision and Bias, Balance Method

Calculated Specific Gravity

Specific Gravity Experimentally Determined

S_T

S

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