Merv Rating For Welding Fumes. While our high efficiency model with MERV filters at a rating of 15 allow the collection of much finer particles as you can see to the right in the orangish box such as welding fumes and lead dust. The primary filters are rated at 15 MERV Glasfloss bag filters or 95 efficiency and are suited for pollutants caused by welding or grinding.
Based on the EPAs Tools for Schools program all schools should have a minimum filtration efficiency of MERV 8 in all HVAC applications Filter Efficiency The Occupational Safety Health Administration does not currently regulate welding fumes. MERV filters typically capture about 95 of particles in their rated ranges. M inimum E fficiency R eporting V alue filters are rated from 1-16.
This is a standard created by the American Society of Heating Refrigerating and Air-Conditioning Engineers.
The primary filters are rated at 15 MERV Glasfloss bag filters or 95 efficiency and are suited for pollutants caused by welding or grinding. The scale spans for 1-20 with the higher number indicating a finer filtration meaning a fewer amount of airborne particles pass through it. MERV RATING CHART Standard 525 Minimum Efficiency Reporting Value Dust Spot Efficiency Arrestance Typical Controlled Contaminant Typical Applications and Limitations Typical Air FilterCleaner Type 20 na na 030 pm particle size Cleanrooms 99999 eff. This is a standard created by the American Society of Heating Refrigerating and Air-Conditioning Engineers.