ASTM D6764

ASTM D6764 is the ASTM standard for collecting water temperature, dissolved-oxygen concentrations, specific electrical conductance, and pH data from open channels. It provides a focused technical framework for field data collection where water-quality conditions must be measured consistently and compared over time. By defining a common approach for these parameters, the standard supports more reliable monitoring results, better data comparability, and clearer documentation for projects that depend on open-channel water observations.

ASTM D6764 standard overview

The official title of ASTM D6764 indicates a guide centered on field collection of key water-quality measurements in open channels. Its purpose is to help users gather temperature, dissolved oxygen, specific electrical conductance, and pH data in a consistent and technically sound way. As a guide, it is generally used to support standardized practice rather than to define product requirements. That makes it useful for teams that need repeatable data collection methods and defensible environmental or operational records.

Where is ASTM D6764 used?

ASTM D6764 is commonly used in open-channel monitoring activities where water conditions are measured directly in moving or flowing waters. It may be applied in field programs that track stream or canal conditions, as well as in other surface-water workflows where these parameters are collected over time. The standard is relevant when instruments, sampling procedures, and documentation need to support consistent readings for water temperature, dissolved oxygen, specific electrical conductance, and pH.

Practical importance of ASTM D6764

This standard matters because field water-quality measurements can vary significantly if collection methods are not consistent. ASTM D6764 helps support better compliance, quality control, and data comparability by guiding how measurements are collected and recorded. That can reduce uncertainty during monitoring, procurement, or technical review, especially when results are used for trend analysis or reporting. For organizations relying on open-channel data, ASTM D6764 offers a practical reference for more dependable measurement practices.

• Open-channel field data collection
• Temperature, DO, conductance, and pH
• Consistent measurement practices
• Support for monitoring and reporting
• Useful for technical documentation