The ASTM testing standards commonly used for trace moisture testers include:
1. ASTM D6304-16 Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration: This standard is applicable to the measurement of water in petroleum products, lubricants, and additives.
2. ASTM D4017-21 Standard Test Method for Water in Paints and Paint Materials by Karl Fischer Method: This standard is applicable to the measurement of water in paint components and paint materials.
3. ASTM D4672-12 Standard Test Method for Polyurethane Raw Materials: Determination of Water Content of Polymers: This standard is used for the measurement of water content in polyurethane raw materials, especially polyether and polyester polyether polyols (PPG and MDI).
4. ASTM D4377-17 Standard Test Method for Water in Crude Oil by Potential Karl Fischer Titration: This standard is applicable to the measurement of water in crude oil.
5. ASTM D4928-18 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration: This standard is applicable to the measurement of water in petroleum products and crude oil.
6. ASTM E203-20 Standard Test Method for Water Using Volumetric Karl Fischer Titration: This standard is a universal moisture measurement method suitable for various types of samples, including liquid, solid, and gaseous samples.
The above are the ASTM testing standards commonly used in trace moisture testers, and the specific standards used need to be determined based on the samples and experimental standards involved in the testing.