THE ENVIRONMENTAL TECHNOLOGY VERIFICATION PROGRAM &EPA HRTI INTERNATIONAL U.S. Environmental Protection Agency Research Triangle Institute ETV Joint Verification Statement TECHNOLOGY TYPE: VENTILATION MEDIA AIR FILTER APPLICATION: FILTRATION EFFICIENCY OF BIOAEROSOLS IN HVAC SYSTEMS TECHNOLOGY NAME: Excel Filter, Model SBG24242898 COMPANY: Glasfloss Industries, Inc. ADDRESS: 400 S. Hall Street PHONE: 214 741-7056 Dallas, TX 75226 FAX: 214 741-4556 WEB SITE: http://www.glasfloss.com/ E-MAIL: mfilewood@glasfloss.comm The U.S. Environmental Protection Agency (EPA) has created the Environmental Technology Verification (ETV) Program to facilitate the deployment of innovative or improved environmental technologies through performance verification and dissemination of information. The goal of the ETV Program is to further environmental protection by accelerating the acceptance and use of improved and cost-effective technologies. ETV seeks to achieve this goal by providing high quality, peer-reviewed data on technology performance to those involved in the design, distribution, financing, permitting, purchase, and use of environmental technologies. ETV works with recognized standards and testing organizations; stakeholder groups which consist of buyers, vendor organizations, permitters, and other interested parties; and with the full participation of individual technology developers. The program evaluates the performance of innovative and improved technologies by developing test plans that are responsive to the needs of stakeholders, conducting field or laboratory tests (as appropriate), collecting and analyzing data, and preparing peer-reviewed reports. All evaluations are conducted in accordance with rigorous quality assurance protocols to ensure that data of known and adequate quality are generated and that the results are defensible. EPA's National Risk Management Research Laboratory contracted with the Research Triangle Institute (RTI) to establish a homeland-security-related ETV Program for products that clean ventilation air. RTI evaluated the performance of ventilation air filters used in building heating, ventilation and air-conditioning (HVAC) systems. This verification statement provides a summary of the test results for the Glasfloss Industries, Inc. Excel filter. S-l ------- VERIFICATION TEST DESCRIPTION All tests were performed in accordance with RTFs "Test/Quality Assurance Project Plan: Biological Testing of General Ventilation Filters," which was approved by EPA. Tests were performed for the following: • Bioaerosol filtration efficiency tests of the clean and dust-loaded filter. Three bioaerosols were used in the testing: o The spore form of the bacteria Bacillus atrophaeus (BG), a gram-positive spore- forming bacteria elliptically shaped with dimensions of 0.7 to 0.8 by 1 to 1.5 //m, o Serratia marcescens, a rod-shaped gram-negative bacteria with a size of 0.5 to 0.8 by 0.9 to 2.0 //m, and o The bacterial virus (bacteriophage) MS2 dispersed as a micrometer-sized poly disperse aerosol. • American National Standards Institute (ANSI)/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 52.2-1999 test. The test uses inert [potassium chloride (KC1)] particles for a filter when clean and through five levels of dust loading. The filtration efficiency results (average of the minimum composite efficiency) are given for three size ranges of particles: El, 0.3 to 1.0 //m; E2, 1.0to3.0//m; andE3, 3.0//mto 10//m. • Inert aerosol filtration efficiency tests similar to the ASHRAE 52.2 test (0.3 to 10 |im) but with extended fractional efficiency measurements down to 0.03 jim particle diameter on a filter when clean and when fully dust-loaded. VERIFIED TECHNOLOGY DESCRIPTION As shown in Figure 1, the Glasfloss Industries, Inc. Excel Filter, Model SBG24242898 is an 8-pocket bag filter with a metal header and nominal dimensions of 0.61 by 0.61 by 0.71 m (24 x 24 x 28 in.). The media is a white and yellow synthetic. VERIFICATION OF PERFORMANCE Verification testing of the Glasfloss Industries, Inc. Excel filter began on May 13, 2004 at the test facilities of RTI and was completed on June 2, 2004. The results for the bioaerosol filtration efficiency tests are presented in Table 1 for the clean and dust-loaded filter. Table 2 presents the results of the ASHRAE 52.2 test. All tests were conducted at an air flow of 0.93 mVsec (1970 cfm). Figure 1. Photograph of the Glasfloss Industries, Inc. Excel filter. S-2 ------- Table 1. Bioaerosol Filtration Results Filter Condition Clean Dust loaded Pressure Drop Pa (in. H2O) 82 (0.33) 348(1.40) Filtration Efficiency for Removal of B. atrophaeus , % 91 98 Filtration Efficiency for Removal of S. marcescens, % 91 98 Filtration Efficiency for Removal of MS2 phage, % 96 99.5 Table 2. Summary of ASHRAE 52.2 Test Filter Glasfloss Industries, Inc. Excel filter El 0.3 to 1.0 //m, % 77 E2 1.0 to 3.0 //m, % 97 E3 3.0 to 10 Aim, % 100 Minimum Efficiency Reporting Value (MERV) 14 at 0.93m3/sec (1970 cfm) The quality assurance officer reviewed the test results and the quality control data and concluded that the data quality objectives given in the approved test/QA plan were attained. This verification statement addresses three performance measures of media air filters: filtration efficiency for inert particles; removal efficiency for selected bioaerosols and pressure drop. Users of this technology may wish to consider other performance parameters such as service life and cost when selecting a media air filter for bioaerosol control. In accordance with the test/QA plan1, this verification statement is valid for 3 years following the last signature added on the verification statement. Original signed by E. Timothy Oppelt, 8/23/04 Original signed by David S. Ensor, 8/5/04 E. Timothy Oppelt Date Director National Homeland Security Research Center Office of Research and Development United States Environmental Protection Agency David S. Ensor Director ETV-HS Research Triangle Institute Date NOTICE: ETV verifications are based on an evaluation of technology performance under specific, predetermined criteria and the appropriate quality assurance procedures. EPA and RTI make no expressed or implied warranties as to the performance of the technology and do not certify that a technology will always operate as verified. The end user is solely responsible for complying with any and all applicable federal, state, and local requirements. Mention of commercial product names does not imply endorsement. S-3 ------- |