Ventilation and air filtration are key strategies to reduce the indoor transmission of COVID-19. Years of air quality research and experience have taught us not all air filters are the same. The absence of independent testing means some do not meet their specifications, and others can generate harmful oxidant gases as a by-product. Instead of improving air quality, they could make it worse! Our team has the expertise to help you make the right choices. Our recommendations are formulated by examining · Volume and existing ventilation of your space · Occupancy, and use of the room (estimated respiration rates, volume of exhaled air) · Tracer tests and carbon dioxide decay rates to analyse air flow and clean air exchanges · Logged pollutant data · The potential ingress of outdoor air pollutants · Noise level requirements Our recommendations are tailored for your workspace and are independent of product incentives. Ongoing carbon dioxide data logging, professional developments and regular maintenance checks keep your indoor workspace air safe.