UltraHEPA With its UltraHEPA technology, FILTR removes 99.95% of all particles such as Mold Spores, Powdery Mildew, Botrytis, Bacteria, Smoke Particles and Viruses. With filtration down to 0.001micron you can be assured of both plant and people protection from harmful airborne contaminants. Science Based Protection FILTR was engineered based on how the cleanest FDA regulated environments in the world are designed and maintained for optimum product and people protection from airborne contaminants. Certified Performance Every filter is factory tested and certified to ensure it meets actual HEPA filter standards at its designed air flow rates. Early Detection Spore (particles) count increases in the air during an outbreak of Powdery Mildew (PM) Early detection is key in order to reduce crop loss. FILTR has an integrated particle mass (PM) detector that both senses and records the increase in counts and reports it back to the FILTR app.