The relationship between 0.3 misrons and pm2.5

For many high technique particle counter, it support two channel particulate matters detecting.
we always mention 0.3 microns and 2.5 micons.
Why somelaser particle counter exchange to pm2.5 and pm10, what is it?
Actually 0.3 microns and 2.5 micons means the number of particulate matters. pm2.5 and pm10 is the weight.
As international standard, it should calculate as particulate matters weight standard.
So lanjia particle counter upgrade the technique support to make device detect quantitiy and weight
at the same time only one bottom to exchange it.
Video: https://www.youtube.com/watch?v=dwLbit3nGLE


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