Pocket filters have gained much popularity these days due to their features and increasing efficiency to filter air in various residential and commercial applications. In this article, we have highlighted the kinds of pocket filters based on MERV.
MERV 14 Pocket Filters
The MERV 14 pocket filters for air filtration are developed for general surgery, hospital patient care, superior commercial building and smoking lounges. These pocket filters provide higher dust-holding capacity for the lower operating costs and more service life. Reinforced media-support further increases the filter strength overall.
- The Minimum Efficiency Reporting Value (MERV) is the efficiency of the filter dependent on the particle size in microns. O.30 to 1.0-micron particle size is for virus, carbon dust, combustible smoke, sea salt and radon progeny.
- Ultra-fine fiberglass media is particularly developed for each of the efficiency range.
- Synthetic media usually doesn’t shed the fibers. Hence, these are used for constant flow, high-humidity applications.
MERV 11 Pocket Air Filters
The MERV 11 pocket filters are usually used in high-end commercial and residential buildings as well as hospital laboratories. The Minimum Efficiency Reporting Value (MERV) is the efficiency of the filter dependent on the particle size in microns. 1.0 to 3.0-micron particle size is for Legionella, humidifier dust, lead dust, coal dust and nebulizer dust.
The Filter Media
Usually, most of the pocket filters use glass fiber media, which is vulnerable to the bacterial growth as well as shedding. On the other hand, it also results in higher filtration efficiency with time.
The synthetic media based pocket filters are typically electrostatically charged to increase their efficiency. The drawback it has is that the media loses efficiency up to 75% over time. To avoid this, a new multilayer synthetic media has been introduced with a smaller fiber diameter. Not only it contributes to result in a limited efficiency loss, but it also increases the service life by more than 30%.