ASTM D8358

ASTM D8358 is a technical guide for assessing and including wall deposits when analyzing airborne particulate matter collected with single-stage samplers. It helps users account for material that may remain on sampler walls rather than on the main collection surface, improving the completeness and consistency of particulate analysis. By addressing this common sampling concern, the standard supports more reliable results in laboratory and field evaluation workflows.

What is ASTM D8358?

ASTM D8358, titled Standard Guide for Assessment and Inclusion of Wall Deposits in the Analysis of Single-Stage Samplers for Airborne Particulate Matter, provides guidance for evaluating deposits that may adhere to the walls of a single-stage sampler. In practice, this type of ASTM standard is used to support more consistent interpretation of collected particulate matter by considering where material may be retained during sampling. The guide is especially relevant when analysts need a clearer basis for deciding whether wall deposits should be included in the final analysis.

Where is ASTM D8358 used?

This guide is commonly used in airborne particulate matter sampling and analysis workflows that rely on single-stage samplers. It is relevant in laboratories, environmental testing programs, and other technical settings where sampler deposits may affect the reported amount of collected material. ASTM D8358 may also be useful during method review, data comparison, and quality control activities where consistent treatment of wall deposits matters to the final result.

Why is ASTM D8358 important?

ASTM D8358 matters because wall deposits can influence how much particulate matter is recognized in an analysis. Using a clear guide helps reduce variation between users and improves confidence in reported results. It can also support procurement and compliance decisions by giving teams a common approach for evaluating sampler deposits. For organizations that depend on repeatable testing and defensible data, this standard helps strengthen consistency and reduce avoidable uncertainty.

• Assessment of wall deposits in sampler analysis
• Guidance for single-stage particulate sampling
• Support for consistent laboratory interpretation
• Useful for quality control and data review