Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM D1429-08
Năm ban hành 2008
Publication date
Tình trạng
W - Hết hiệu lực
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Tên tiếng Anh
Title in English Standard Test Methods for Specific Gravity of Water and Brine
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 7
Giá:
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Phạm vi áp dụng
Scope of standard 1.1 These test methods cover the determination of the specific gravity of water and brine free of separable oil, as follows:SectionsTest Method A-Pycnometer 7 to 11, 21Test Method B-Balance12 to 16, 21Test Method C-Erlenmeyer Flask17 to 21Test Method D-Hydrometer22 to 271.2 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). 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. TABLE 1 Determination of Bias, Pycnometer Method Calculated Specific GravitySpecific Gravity Experimentally Determined± %BiasStatistically Significant (95 % Confidence Level)1.02471.0262−0.049yes1.06481.0665 + 0.16yes1.11001.1119 + 0.17yes1.22991.2235−0.52yesTABLE 2 Determination of Bias, Balance Method Calculated Specific GravitySpecific Gravity Experimentally Determined± %BiasStatistically Significant (95 % Confidence Level)1.02471.0264−0.166yes1.06481.0657 + 0.084yes1.11001.1126 + 0.234yes1.22991.2233−0.539yesTABLE 3 Determination of Bias, Erlenmeyer Flask Method Calculated Specific GravitySpecific Gravity Experimentally Determined± %BiasStatistically Significant (95 % Confidence Level)1.02471.026 + 0.126yes1.06481.066 + 0.169yes1.11001.1121 + 0.74no1.22991.2225−0.60yesTABLE 4 Determination of Bias, Hydrometer Method Calculated Specific GravitySpecific Gravity Experimentally Determined± %BiasStatistically Significant (95 % Confidence Level)1.02471.0256 + 0.088no1.06481.0647−0.099no1.11001.1106 + 0.054no1.22991.2207−0.74yes
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