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Mitsubishi Electric Lossnay series Technical Manual Page 38

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Table 1 Test Results with
No.
1
2
3
4
5
Average
Table 2 Test Results with
No.
1
2
3
4
5
Average
(7) Considerations
Bacillus subtilis is commonly detected in the air and resistant to dry conditions. Pseudomonas diminuta is
susceptible to dry conditions and only a few bacterium exists in the air; however, it is used to test filter performance
because the particle size is small (Cell diameter: 0.5 µm; Cell length: 1.0 to 4.0 µm).
Both Bacillus subtilis and Pseudomonas diminuta are detected at Locations A and B in the outlet side duct where
they are sprayed, but neither them are detected at Location C (in the air filtered by the HEPA filter) and Location D
on the inlet side.
Because the number of bacteria in Location A is substantially equal to one in Location B, it is estimated that only a
few bacteria are present in the Lossnay Core on the outlet side. Also, no test bacteria are detected at Location D.
The conclusion is, therefore, that the bacteria present in the outlet side will not pass through the inlet side even
after the energy is exchanged.
Shunji Okada
Manager, Biological Section
Kitasato Research Center of Environmental Sciences
CHAPTER 3
Bacillus Subtilis
(CFU/30L air)
A
4
5.4 × 10
8.5 × 10
3
3
7.5 × 10
4
1.2 × 10
4
1.8 × 10
4
2.0 × 10
Pseudomonas Diminuta
(CFU/30L air)
A
5
3.6 × 10
5
2.5 × 10
5
2.4 × 10
5
3.4 × 10
1.7 × 10
5
5
2.7 × 10
General Technical Considerations
B
C
4
5.6 × 10
< 10
7.5 × 10
3
< 10
3
< 10
< 10
4
1.2 × 10
< 10
3
1.5 × 10
< 10
4
1.5 × 10
< 10
B
C
5
2.9 × 10
< 10
5
1.2 × 10
< 10
5
7.2 × 10
< 10
5
8.4 × 10
< 10
3.8 × 10
5
< 10
5
4.7 × 10
< 10
D
3
3
< 10
3
< 10
3
3
3
< 10
3
3
< 10
3
3
< 10
3
3
< 10
D
3
3
< 10
3
3
< 10
3
3
< 10
3
3
< 10
3
< 10
3
3
3
< 10
U-29

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