Author Topic: Air quality monitoring and filtering  (Read 219 times)


  • Mostly Harmless
Air quality monitoring and filtering
« on: 30 September, 2021, 12:22:25 pm »

With winter fast approaching, out current approach in the office of having every window open for ventilation, is not going to be very viable. We know that air quality management is a great way of lowering the risk of infection in the office. I've suggested we get a number of HEPA filters to pull out aerosole droplets from the air. I've also suggested we get PM2.5, PM10, and CO2 monitors for the office so we have some data on how effective these measure are.

Has anyone else done this? Has anyone found useful guideline figures on how high the PM2.5 and CO2 should be allowed to reach before we panic?

Beer, bikes, and backpacking


  • Currently in Slovakia
Re: Air quality monitoring and filtering
« Reply #1 on: 30 September, 2021, 02:35:26 pm »
CO2 levels are shown at, for example, UK outdoor air is usually around 40ppm. 5,000ppm is a common maximum indoor workplace level maximum.

As for PM2.5 and PM10, the government's web site says (here):
The Air Quality Standards Regulations 2010 require that concentrations of PM in the UK must not exceed:
An annual average of 40 µg/m3 for PM10;
A 24-hour average of 50 µg/m3 more than 35 times in a single year for PM10;
An annual average of 25 µg/m3 for PM2.5.