What Are Those Itchy Scabs On The Back Of My Catâs Neck, Top Of Her Head And Tail? CatChannel veterinary expert, Arnold Plotnick, DVM, discusses the possible causes and cures for itchy skin in cats.
The Borg Rating of Perceived Exertion (RPE) is a way of measuring physical activity intensity levels. Perceived exertion is how hard you feel like your body is working.
The scale is designed to represent the worst-case performance of a filter when dealing with particles in the range of 0.3 to 10 micrometers. The MERV rating is from 1 to 16. Higher MERV ratings correspond to a greater percentage of particles captured on each pass, with a MERV 16 filter capturing more than 95% of particles over the full range. Below is a table grouping MERV ratings by particle size: