e are pleased to inform you about the new Particulate Matter (PM) and Particle Number Concentration (PN) threshold values as published by WHO in the 2021 Global Air Quality Guidelines.
The threshold values for PM were previously established, but new are the recommended values for PN and Ultra-fine Particles (UFPs) starting at 10 nm. of up to 20,000 part/cm3 at a 1-hour exposure. To what extent does your living- and working environment comply?
View the TSI delivery program: TSI_Environmental_Monitoring,
or contact us for a suitable measurement solution and the full WHO publication, mailto: info@jjbosbv.nl or tel: +31-182-619333.
TSI model 3783 CPC