the Ali express 11.11 sale throws up a few odds & ends..
NOT a scientific unit, more home reference but by far the cheapest I have seen chinese schmutter of this nature that you may wish to reference in a variety of scenarios (woodburners, trips to ikea & trying to g folk to realise how "nasty" spray cans are in rooms on an environmental level.
Monitors& displays...
TVOC HCHO PM2.5 PM10
https://www.aliexpress.com/item/1005003 ... LAeFq&mp=1
Showing as £11.83 per unit delivery from within the uk
Buy two & the p+p = £7.72
New users might save a few quid also by opening an account & grabbing coupons
Discount is from the beginning to he end of the sale, stick it in your basket to get the price displayed from the seller.
Ali express sticks vat on after check out (cunning) so please "do the math"
Hope this helps someone hanging on for this kit.
Forgot to say, note the chinglish in the upper display within the product pictures!
