5 years or rigorous research and validation studies by leading world authorities in respiratory protection at the University of Cincinnati School of Environmental Science prove the WEIN VI-3500 does its job with flying colors! Results PEER REVIEWED and published in INTERNATION SCIENTIFIC JOURNALS by respected researchers show the VI-3500 results to be accurate and repeatable for the VORTEX VI-3500 in delivering superior large room negative ionization performance! The swirling air VORTEX effect creates additional room VENTILATION that enhances the protection factor. Ongoing studies have shown that the WEIN IONIZERS actually enhance the protective factors of mask wearers by charging the mask materials.

• A proven weapon against air pollutants and contaminants confirmed by leading world authorities in respiratory protection.
• Quiet, filterless, zero maintenance, low energy and work 24/7. American Lung Association: “If you can’t breathe, nothing else matters”!
• Five years of research by University of Cincinnati School of Environmental Science. Published and peer reviewed under vigorous scientific accreditation by respected scientists.
• Testing chambers with the most advanced monitoring equipment used by EPA, CDC, US Government.
• Universal operation. Invented here at Wein Products Inc., Los Angeles, Ca. USA. Hundreds of thousands sold worldwide.