ASTM D7788-14(2023) PDF
Standard Practice for Collection of Total Airborne Fungal Structures via Inertial Impaction Methodology
Standard Practice for Collection of Total Airborne Fungal Structures via Inertial Impaction Methodology
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 января 2023 г.
- Издание:
- D7788
- ICS:
- 13.040.20
SIGNIFICANCE AND USE 4.1 This practice is intended for the collection of airborne fungal spores or fragments, or both, using inertial impaction. 4.2 It is the responsibility of the user to assure that they are in compliance with all local, state and federal regulations governing the inspection of buildings for fungal colonization and the collection of associated samples. 4.3 This practice is intended to provide the user with a basic understanding of the equipment, materials and instructions necessary to effectively collect air samples using an inertial impactor. 4.4 This practice, when properly executed, may also be used for the evaluation of other types of airborne particles with the capturing characteristics appropriate for inertial impactor, and for which appropriate analytical methods exist. Such particles may include dust mites, skin cells, pollen, and other materials. SCOPE 1.1 The purpose of this practice is to describe procedures for the collection of airborne fungal spores or fragments, or both, using inertial impaction sampling techniques. 1.2 This practice is not intended to limit the user from the collection of other airborne particulates that may be of interest and captured through this technique. 1.3 This practice presumes that the user has a fundamental understanding of field investigative techniques related to the scientific process, and sampling plan development and implementation. It is important to establish the related hypothesis to be tested and the supporting analytical methodology needed in order to identify the sampling media to be used and the laboratory conditions for analysis. 1.4 This practice does not address the development of a formal hypothesis or the establishment of appropriate and defensible investigation and sampling objectives. It is presumed the investigator has the experience and knowledge base to address these issues. 1.5 This practice does not provide the user sufficient information to allow for interpretation of the analytical results from sample collection. It is the user's responsibility to seek or obtain the information and knowledge necessary to interpret the sample results reported by the laboratory. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Abstract
Overview
ASTM D7788-14(2023), Standard Practice for Collection of Total Airborne Fungal Structures via Inertial Impaction Methodology, is a globally recognized ASTM standard developed for the collection of airborne fungal spores and fragments. Using inertial impaction, this practice provides guidance on the effective sampling of air for assessing fungi-related contamination in various environments. The standard is essential for professionals involved in indoor air quality assessments, environmental health, and the evaluation of fungal colonization in buildings.
This standard ensures that sampling is consistent, scientifically sound, and supports compliance with local, state, and federal regulations concerning mold and indoor air quality investigations. It also extends to the evaluation of other airborne particles when appropriate analytical methods are available, making it versatile for broader bioaerosol investigations.
Key Topics
- Inertial Impaction Sampling: Guidance on using inertial impactor devices designed to collect airborne fungal structures by separating them from the air via inertia onto a collection surface.
- Sampling Equipment and Calibration:
- Requirements for proper sampling assemblies, including cassettes or slides, pumps/fans, tubing, and calibration devices.
- Procedures for calibrating and verifying airflow rates using primary and secondary calibration devices to ensure accurate sample volumes.
- Field Procedures:
- Instructions for the setup and operation of sampling assemblies.
- Sample identification, labeling, and the maintenance of chain-of-custody documentation.
- Recording environmental conditions and sampling parameters (e.g., temperature, humidity, airflow).
- Sample Submission and Documentation:
- Guidelines for properly handling, transporting, and submitting samples for laboratory analysis.
- Details regarding field data sheet requirements, sample identification, and custody transfer protocols.
- Limitations and Responsibilities:
- Users are expected to have foundational knowledge of investigative and sampling techniques.
- The standard does not provide instructions for hypothesis development or analytical result interpretation; users must obtain this expertise separately.
- Emphasizes safety, regulatory compliance, and awareness of limitations inherent to sampling airborne particles.
Applications
ASTM D7788-14(2023) is widely applied across multiple sectors, particularly in the fields of:
- Indoor Air Quality Assessment: Sampling for airborne fungal spores and fragments in residential, commercial, and institutional buildings to evaluate potential mold issues and health risks.
- Environmental Health and Safety: Used by occupational health professionals and industrial hygienists for routine inspections and after water damage events.
- Regulatory Compliance: Assists organizations in meeting local, state, and federal requirements concerning mold inspections and the collection of bioaerosol samples.
- Research: Employed for scientific studies related to fungal exposure, airborne particulate characterization, and environmental contamination.
- Broader Bioaerosol Sampling: While centered on fungal structures, the methodology can be adapted for the collection of pollen, dust mites, skin cells, and similar particulates when appropriate analytical techniques are available.
Related Standards
For comprehensive air sampling and analysis, ASTM D7788-14(2023) references and complements several related ASTM standards:
- ASTM D1356: Terminology Relating to Sampling and Analysis of Atmospheres
- ASTM D3195/D3195M: Practice for Rotameter Calibration
- ASTM D4840: Guide for Sample Chain-of-Custody Procedures
- ASTM D6044: Guide for Representative Sampling for Management of Waste and Contaminated Media
- ASTM D7391: Test Method for Categorization and Quantification of Airborne Fungal Structures in an Inertial Impaction Sample by Optical Microscopy
These standards collectively support best practices for accurate airborne particle sampling, reliable documentation, and consistent calibration, helping ensure high-quality results in indoor air quality investigations and broader environmental assessments.
For more information or to obtain these standards, visit the ASTM International website.
Технические детали
- Технический комитет
- D22 - Air Quality
- SKU
- ASTM D7788-14(2023)
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