Overview
ASTM D7707-21: Standard Specification for Wipe Sampling Materials for Beryllium in Surface Dust provides established criteria for the manufacture, performance, and use of premoistened wipe materials designed specifically for collecting settled dust containing beryllium from surfaces. Developed by ASTM International’s Committee D22 on Air Quality, this standard supports reliable surface dust sampling for subsequent analysis of beryllium-a material of significant concern due to its toxicity and presence in industrial environments.
The specification focuses on ensuring that wipe sampling materials consistently meet strict requirements for cleanliness, durability, moisture content, size, and beryllium background levels. Adhering to these requirements helps maintain the accuracy and reliability of surface dust measurements in the workplace or other sensitive environments, facilitating risk assessment and regulatory compliance for beryllium exposure.
Key Topics
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Scope of Use
This standard applies to premoistened wipes designed for the specific purpose of collecting beryllium traces in settled dust on surfaces. It does not cover wipes intended for other analytes such as lead, which is addressed under ASTM E1792.
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Product Manufacturing and Quality Requirements
- Wipes must be manufactured from clean materials, free from defects that could affect performance.
- Each wipe must meet set standards for background beryllium levels, ruggedness, moisture content, thickness, size, and mass.
- Beryllium recovery and collection efficiency criteria ensure the wipes’ suitability for reliable sampling.
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Testing and Performance Criteria
- Methods for evaluating wipes include random sampling procedures and established test methods-collection efficiency, ruggedness, and moisture content testing are all covered.
- Test results must meet specified thresholds for mean recoveries and variation to ensure consistency between batches.
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Packaging and Labeling
- Each package of wipes must be individually wrapped and clearly marked with essential information such as manufacturer, lot number, date of manufacture, and expiration date (minimum one year from manufacturing).
- Packages must indicate compliance with ASTM D7707, specifying “Large Wipes” or “Small Wipes” as appropriate.
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Documentation and Recordkeeping
- Suppliers are required to retain detailed test results for a minimum of five years, ensuring transparency and traceability.
Applications
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Workplace Air Quality Monitoring
- Employers, safety professionals, and laboratories use these wipes to collect surface samples for beryllium determination in industrial settings such as manufacturing, aerospace, and mining operations.
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Occupational Health & Safety Compliance
- Supporting compliance with regulatory bodies and occupational exposure limits by enabling accurate surface contamination assessments.
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Validation and Comparison of Sampling Materials
- Provides manufacturers and users with standardized criteria for comparing performance between different brands or lots of wipes, ensuring consistent results.
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Research and Risk Assessment
- Researchers and environmental health professionals employ these materials to monitor contamination patterns and inform risk mitigation strategies where beryllium exposure is a concern.
Related Standards
- ASTM D1356 – Terminology Relating to Sampling and Analysis of Atmospheres
- ASTM D6966 – Practice for Collection of Settled Dust Samples Using Wipe Sampling Methods for Subsequent Determination of Metals
- ASTM D7035, D7202, D7439 – Test Methods for Determination of Metals (including Beryllium) in Airborne Particulate Matter
- ASTM E105 – Guide for Probability Sampling of Materials
- ASTM E1792 – Specification for Wipe Sampling Materials for Lead in Surface Dust
Keywords: ASTM D7707, beryllium, wipe sampling materials, surface dust, occupational health, industrial hygiene, settled dust sampling, air quality standards, workplace contamination, sampling wipes.