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CHAPTER 8
Filtering for Freshness
The ability of the filters used within the Lossnay units are shown below, expressed in terms of collection ratio (%).
100
80
60
40
20
0.2
0.3
0.4
88
Colourimetric method
90% filter
0.6
0.8 1.0
2.0
High efficiency
filter
3.0
4.0
6.0
8.0 10.0
Particle diameter (µm)
NP/400
20
30
40
60
80
100
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