Hi Gary, You're right that HEPA is not always needed and we are trying to communicate this to a broad audience. Hence our statement "HEPA filter units (or other air filter units containing similar high-performance filters - which for ease we’ll just refer to as HEPA filter units) can help ..."
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Please share, thanks!
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Please share. Developed by @henryburridge.bsky.social, @sarahwestsei.bsky.social & team based on work by Henry, @cathnoakes.bsky.social et al.
Really great effort from everyone launching the CHEPA calculator this week - the aim is to help schools, and their administrations, make plans to improve the air quality in classrooms. Any thoughts on the final version @cathnoakes.bsky.social ?
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Still time to sign up for our free webinar for World Ventilate Day 2025. We’ll be introducing new research networks and discussing how to deliver better ventilation and IAQ for everyone. 7th Nov 12-1pm, sign up at www.eventbrite.com/e/world-vent...
Ooh, exciting!
This was such a good event, and a big thank you to Malcolm Cook, @henryburridge.bsky.social and @abigailhathway.bsky.social for making it happen.
Having a bit of a reminisce today. Five years ago an email arrived that changed my life - a request to produce a paper on what we knew about the environmental transmission of covid-19 for the UK SAGE committee. 1/
A webinar discussing practical solutions 👏🏼🙏🏻
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#SafeAirSchools
events.teams.microsoft.com/event/7d54c6...
Ooh, exciting!
Really great to see this again @samhe.bsky.social
Has your #school considered #AirFilters? How would it affect your #AirQuality and #energy use?
Help us design a tool for schools to easily see the costs and benefits of installing #HEPA filter units in their setting.
Read more: bit.ly/40bzWpO
#CHEPA (Classroom HEPA), from the #SAMHE team. 🍎
A purple, and lilac card with two overlapping graphics on the left: one of of two people high fiving and the other of a document which has “policy’ written on it; the SAMHE logo; the title “Empowering individuals. Informing policy."; and the text SAMHE is designed to: enable pupils to interact with real world data about their environment; enable school communities to take informed action to improve their air quality; provide an unparalleled dataset to inform national policy and practice on air quality.”
Welcome, whether you are new to #SAMHE or already follow us elsewhere.
This is a place to learn about indoor #AirQuality in UK #schools, be inspired by what pupils and staff are doing about it, read our policy recommendations and discover free educational resources.
#EduSky #HealthyAir #STEM #IAQ
Pupils from Elangeni school speaking with Rita Dhut at the UKRI parliamentary reception.
Sarah West by SAMHE display at UKRI reception.
Last month we shared our recommendations for improving
#AirQuality in #UKschools at a @ukri.org parliamentary reception.
We were delighted that #SAMHE was chosen as a showcase of how publicly funded research and innovation positively impacts people’s lives.
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We have a local farm where you take apples and they press and bottle apple juice - lovely, see if you have one local to you...
I would definitely say that only the data from 1 of the 4 classrooms indicates good per-person ventilation. 'Very bad air quality' is too vague - I think the paper I cited above might provide the exact corresponding values of mean CO2 values, if that's what you're interested in ...
Without knowing occupancy and window opening some of your suggestions (e.g removing 11:30-14:00) would result in lowering the dailly mean CO2 reported - certainly the much talked about 'lunch hour' makes a non-significant difference on the vast majority of days shown.
Before you get going about your favourite 'lunch hour', zoom into the attached figure (from doi.org/10.1016/j.jo...) notionally similar classrooms and occupancy - so ventilation behaviour has a leading order effect.
We know the schools are operational on the days analysed and the monitors are placed in occupied classrooms - in case you are unaware, UK schools don't have loads of empty classrooms just kicking around...
The article goes to great lengths to infer ventilation rates concluding the attached - these rates account for inoccupancy and are far more meaningful than CO2 thresholds. The fact these are low and adherence high is the best evidence for the need of changing things for the better...
This is a research article, not an opinion piece - only reporting fact allowed, not passing personal opinions on guidance is suitably. On X, I've made it clear that the BB101 thresholds are not we should be aiming for but, for now, they are the guidance. More importantly, you miss the point...
Loads more findings within - my fav is that CO2 levels are statistically differ within primary and secondary schools but translating to per-person ventilation shows there is no difference as the latter appropriately accounts for differing generation rates of different age groups.
we also use the analysis published here doi.org/10.1016/j.bu... to demonstrate that the associated per-person ventilation rates are low (relative to almost all available guidance).
Very glad to see this paper out: doi.org/10.1016/j.di... reporting evidence based on the first term of CO2 data from the @SAMHEProject - headline is that adherence to UK guidance for schools is relatively high most of the time; however...
This is very cool - just like climate you can now find air quality stripes for where you are in the world. And it’s a really stark reminder of the inequalities with places like the UK showing improvement but cities in many parts of the world still getting worse airqualitystripes.info/stripes/?con...
Good to see this paper from the SAMHE study. Shows that classroom CO2 levels within guidelines most of the time but exceed regularly and sometimes by a lot. Per person ventilation rates are low, and schools in wealthier areas or fee paying likely to have better ventilation doi.org/10.1016/j.di...
Interesting piece from Leeds colleague Mark Mon-Williams on the importance of digital education for children to combat the rise in hate and close the digital divide www.bigissue.com/opinion/uk-r...
