ASTM G136-03(2023)e1 PDF

Overview

ASTM G136-03(2023)e1 is a standard practice developed by ASTM International that provides procedures for the determination of soluble residual contaminants in materials through ultrasonic extraction. This practice is particularly significant for industries and applications where a high level of material cleanliness is critical, such as oxygen systems and sensitive aerospace components. The standard allows users to evaluate and quantify extractable nonvolatile and semivolatile substances from materials like gloves, wipes, and component soft goods, ensuring suitability for use in contamination-sensitive environments.

Key Topics

• Ultrasonic Extraction: Utilizes an ultrasonic cleaning bath to extract soluble contaminants from samples, such as wipes and gloves, using either aqueous or solvent-based agents.
• Nonvolatile Residue (NVR): Focuses on the measurement of residual molecular (non-particulate) matter left after extraction, which can affect the performance of high-cleanliness systems.
• Applicability: Suitable for new and used cleaning materials and soft components; not intended for evaluating particulate contamination.
• Optimization Parameters: Extraction efficiency and contaminant removal effectiveness depend on the ultrasonic unit's frequency and power density, making careful system evaluation necessary.
• Testing and Evaluation: Allows for pre-use assessment of cleaning materials to ensure that extraction agents neither introduce nor fail to remove contaminants.
• Reporting: Specifies detailed documentation requirements, including identification of materials, extraction conditions, agents used, and results.

Applications

• Oxygen System Components: Testing seals, valve seats, gloves, and wipes to prevent contaminant risk in oxygen-enriched atmospheres.
• Aerospace and High-Cleanliness Manufacturing: Ensures that materials used in spacecraft and sensitive equipment do not introduce extractable residues during assembly or maintenance.
• Quality Assurance in Cleaning Operations: Assesses both the cleanliness of new wipes and gloves and the contamination present on those used for cleaning, supporting improvements to cleaning protocols.
• Material Selection and Validation: Assists in the selection of cleaning agents and materials by evaluating their potential to either extract undesirable chemicals or leave contaminants on sensitive surfaces.

Related Standards

Several related ASTM standards complement ASTM G136 for ensuring material cleanliness through extraction and residue analysis, including:

• ASTM D1193 - Specification for Reagent Water, outlining water quality for extractions.
• ASTM E1235 - Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Controlled Environments.
• ASTM F331 - Test Method for Nonvolatile Residue of Solvent Extract from Aerospace Components.

Additionally, ASTM G136 is developed in accordance with international standardization principles set by the World Trade Organization Technical Barriers to Trade (TBT) Committee, affirming its global relevance.

Practical Value

• Risk Reduction: Supports prevention of failures or hazardous incidents due to insufficiently cleaned materials in oxygen or other high-precision systems.
• Process Optimization: Informs users about optimal ultrasonic extraction conditions for maximum contaminant removal, boosting the reliability of cleaning processes.
• Traceability and Compliance: Comprehensive reporting ensures regulatory, project, and customer requirements for cleanliness and contamination control are met.
• Versatility: Enables both routine quality verification and the development of cleaning methods suited to evolving materials, cleaning agents, and system requirements.

Summary

Implementing ASTM G136-03(2023)e1 enables organizations to reliably assess and control soluble residual contamination in a broad range of materials via ultrasonic extraction, directly supporting safety, functionality, and regulatory compliance in critical applications where cleanliness is paramount.

Keywords: ASTM G136, ultrasonic extraction, nonvolatile residue, contamination control, oxygen systems, material cleanliness, cleaning validation, nonvolatile residue analysis, aerospace cleaning standards.