ASTM D3875-15 PDF

Scope: 5.1 Alkalinity as carbonate and bicarbonate of saline water is very important in chemical waterflooding or tertiary recovery processes for recovering petroleum. Alkaline waters offer better wetting to the formation rock and improve oil release. As an additional benefit, ions that provide alkalinity adsorb on rock surfaces occupying adsorption sites and decrease the loss of recovery chemical by adsorption. Determination of alkalinity in waters used in tertiary recovery processes is therefore very important.

5.2 An alkalinity value is necessary in the calculation of carbonate scaling tendencies of saline waters. It is also necessary to determine the alkalinity if the ionic balance of a water analysis is to be used as a check of the reliability of the analysis.

1.1 This test method covers the determination of alkalinity in brackish water, seawater, and brines.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

ASTM D3875-15 Referenced Document

ASTM D1129 Standard Terminology Relating to Water
ASTM D1193 Standard Specification for Reagent Water
ASTM D2777 Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water
ASTM D3370 Standard Practices for Sampling Water from Closed Conduits
ASTM D5847 Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
ASTM E200 Standard Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis

2023 ASTM D3875-15(2023) Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines
2015 ASTM D3875-15 Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines
2008 ASTM D3875-08 Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines
2003 ASTM D3875-03 Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines
1997 ASTM D3875-97 Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines