ASTM F3502-21 Standard Specification for Barrier Face Coverings
ASTM F3502-21 was primarily established in response to the global COVID-19 pandemic This standard specifies minimum design, performance, and testing requirements for barrier face coverings. The effectiveness of the barrier face-covering depends on how well particles are blocked by the barrier face covering, how well it minimizes the amount of leakage that may occur around the perimeter of the barrier face covering, and how comfortable it is for individuals (breathability).
ASTM F3502-21 ensures that the barrier face coverings meet the stated requirements by providing a means to reduce the number of expelled droplets and aerosols from the wearer’s nose and mouth into the air, and reduce the amount of inhaled particulate matter by the wearer.
This specification deals with all barrier face coverings intended for either single-use or multiple uses (reusable). This specification does not deal with requirements for medical face masks, which are covered in Specification F2100.
Overview of the Specification:
ASTM F3502-21 lays out minimum design, performance (testing), labeling, user instruction, reporting and classification, and conformity assessment requirements for barrier face coverings.
Design criteria establish the minimum areas of face coverage over the wearer’s nose and mouth. Manufacturers are required to perform a design analysis to assess leakage of exhaled air from the barrier face covering.
Performance requirement and Test Method
Performance requirement defines minimum barrier face-covering filtration efficiency and airflow resistance performance properties. The performance of the mask is tested by sub-micron particle filtration efficiency and airflow resistance.
Sub-micron particulate filtration efficiency is the ability of the face-covering to capture droplets containing viruses and bacteria. Airflow resistance represents breathability. Barrier face coverings must be comfortable enough for individuals to be willing to wear them for long periods
Conformance to this standard requires that an accredited laboratory conduct sub-micron particulate filtration efficiency and airflow resistance tests.
Reporting and Classification
A test report should be prepared that includes information such as the manufacturer’s name, the product name or model number, the test laboratory name and accreditation credentials; product design analysis, average bacterial filtration efficiency and qualitative leakage assessment testing.
Each barrier face covering should have a label with the manufacturer’s name, identification, designation, or logo; the barrier face-covering model or style, and the following statement: “MEETS ASTM F3502.”
A set of user instructions should be provided with the package containing the following information: The manufacturer, product, and compliance. Instructions on how to select the correct size. If the product is reusable then inspection, use, and care instructions, including laundering or cleaning and the service life. cautions and limitations. Storage conditions and the shelf life. Disposal of the barrier.
Ten test specimens should be tested. Additional ten specimens will be tested if the barrier face coverings are reusable. Specimens should include the entire product or at least the portion that covers the nose and mouth.
Specimens should be preconditioned at relative humidity and temperature for 1 hour. After conditioning, the filters should be sealed in an airtight, non-hygroscopic container and tested within 10 hours.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
Send us a request
Process for testing
You share material and testing requirements with us
We ensure your sample pick-up in an ensured manner
We deliver test report to your inbox
Just share your testing requirements and leave the rest on us!
Free, no-obligation consultation
Quick turnaround time
Let us combine our capabilities to achieve success!!