ASTM D2687-95(2024) PDF

Overview

ASTM D2687-95(2024): Standard Practices for Sampling Particulate Ion-Exchange Materials provides comprehensive procedures for the representative collection of samples from various forms of ion-exchange materials. Published by ASTM International, this standard is essential for ensuring that testing and analysis of ion-exchange resins and related materials are based on accurately obtained samples, whether they are delivered dry, free-flowing, or moist from the manufacturer. The document addresses the handling of materials as received, prior to any resin-conditioning, and emphasizes the importance of maintaining sample integrity throughout the collection process.

Key Topics

• Sampling procedures for both dry/free-flowing and moist ion-exchange materials.
• Collection methods for samples from single packages, multiple package shipments, and in situ ion-exchange equipment with either unrestricted or restricted head room.
• Use of appropriate sampling devices depending on material moisture (e.g., hollow probe guides, sampling tubes, core samplers).
• Sample preservation using sealable, gasproof containers to prevent changes in the ion-exchange materials after sampling.
• Labeling best practices to ensure traceability, including documentation of supplier, type, location, batch, date, and intended analysis.
• Quartering techniques for reducing sample size representatively when necessary.
• Safety, health, and regulatory compliance responsibilities for users of the standard.

Applications

ASTM D2687-95(2024) is vital for maintaining the quality and reliability of analysis within industries utilizing ion-exchange processes, such as water treatment, chemical manufacturing, and environmental testing. Practical use cases include:

• Quality control in procurement: Ensuring that ion-exchange materials received from suppliers are consistent with purchasing specifications.
• Laboratory analysis: Obtaining representative samples for detailed physical and chemical testing, which supports accreditation, method validation, and research.
• Plant operations: Monitoring the condition and exchange capacity of resin beds in water treatment plants by sampling both new and spent resins.
• Regulatory compliance: Supporting environmental monitoring and reporting by providing standardized procedures for sampling, traceability, and documentation.

Related Standards

For comprehensive sample management and testing, the following referenced ASTM standards and guides are often used in conjunction with ASTM D2687-95(2024):

• ASTM C183: Practice for Sampling and the Amount of Testing of Hydraulic Cement.
• ASTM D1129: Terminology Relating to Water, which includes definitions relevant to ion-exchange processes.

Additional relevant standards may include those published by ASTM Committee D19 on Water and Subcommittee D19.08 on Membranes and Ion Exchange Materials, providing guidance on water quality and ion-exchange applications.

Keywords: ASTM D2687, ion-exchange resin sampling, particulate materials, representative sample, sampling procedure, quality control, water treatment, resin analysis, standardized practices, fixed bed ion-exchange, ASTM standards.