ASTM E203-23
Standard Test Method for Water Using Volumetric Karl Fischer Titration

Standard No.

ASTM E203-23

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E203-24

Latest

ASTM E203-24

Scope

1.1 This test method is intended as a general guide for the application of the volumetric Karl Fischer (KF) titration for determining free water and water of hydration in most solid or liquid organic and inorganic compounds. This test method is designed for use with automatic titration systems capable of determining the KF titration end point potentiometrically; however, a manual titration method for determining the end point visually is included as Appendix X1. Samples that are gaseous at room temperature are not covered (see Appendix X4). This test method covers the use of both pyridine and pyridine-free KF reagents for determining water by the volumetric titration. Determination of water using KF coulometric titration is not discussed. By proper choice of the sample size, KF reagent concentration and apparatus, this test method is suitable for measurement of water over a wide concentration range, that is, parts per million to pure water. 1.2 The values stated in SI units are to be regarded as 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warnings are given in 3.1 and 7.3.3. 1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions for chemicals used in this test procedure. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E203-23 Referenced Document

• ASTM D1123 Standard Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method
• ASTM D1193 Standard Specification for Reagent Water
• ASTM D1348 Standard Test Methods for Moisture in Cellulose
• ASTM D1364 Standard Test Method for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)
• ASTM D1533 Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration*， 2024-04-22 Update
• ASTM D1568 Standard Test Methods for Sampling and Chemical Analysis of Alkylbenzene Sulfonates
• ASTM D1631 Standard Test Method for Water in Phenol and Related Materials by the Iodine Reagent Method
• ASTM D2072 
• ASTM D2575 
• ASTM D3277 Standard Test Methods for Moisture Content of Oil-Impregnated Cellulosic Insulation
• ASTM D3401 Standard Test Methods for Water in Halogenated Organic Solvents and Their Admixtures
• ASTM D4017 Standard Test Method for Water in Paints and Paint Materials by Karl Fischer Method
• ASTM D4672 Standard Test Method for Polyurethane Raw Materials: Determination of Water Content of Polyols*， 2024-02-01 Update
• ASTM D4928 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
• ASTM D5460 Standard Test Method for Rubber Compounding Materials-Water in Rubber Additives
• ASTM D6304 Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration
• ASTM D6809 Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
• ASTM D803 Standard Test Methods for Testing Tall Oil
• ASTM D890 Standard Test Method for Water in Liquid Naval Stores
• ASTM E1064 Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration*， 2024-01-01 Update
• ASTM E180 Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals

ASTM E203-23 history

• 2024 ASTM E203-24 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• 2023 ASTM E203-23 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• 2016 ASTM E203-16 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• 2008 ASTM E203-08 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• 2001 ASTM E203-01 Standard Test Method for Water Using Volumetric Karl Fischer Titration
• 2001 ASTM E203-96 Standard Test Method for Water Using Volumetric Karl Fischer Titration