use "verified" or "certified" marks to ensure bats meet specific safety and performance standards. "Air" Technology
The BREF for Waste Incineration states that BAT-AEL for dust is <5 mg/Nm³. A baghouse filter claiming to be "BAT-compliant" must be tested and verified to meet that level continuously.
: To be verified as legal, a bat must pass through the gauge, which limits dimensions to: Width : 4.25 inches (10.8 cm). Depth (the "Meat") : 2.64 inches (6.7 cm). Edges : 1.56 inches (4.0 cm).