Table of Air Filters Linter Filters - Filtration Classes
Click on the image for information about the filters.
Filtration Classification Coarse, Medium, Fine and Absolute HEPA Filters
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Class NBR ISO 16890 |
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Group
of filters |
Class
NBR16101 |
ISO Coarse
(Efficiency @
PM 10 < 50%) |
ISO ePM 10 |
ISO ePM2,5 |
ISO ePM1 |
| thick |
G1 |
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G2 |
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G3 |
> 60% |
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G4 |
> 70% |
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| Medium |
M5 |
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Ef > 50% |
10% ≤ Ef < 50% |
5% ≤ Ef < 40% |
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M6 |
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Ef > 60% |
50% ≤ Ef < 65% |
10% ≤ Ef < 45% |
| fines |
F7 |
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Ef > 85% |
65% ≤ Ef < 80% |
50% ≤ Ef < 65% |
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F8 |
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Ef > 90% |
Ef > 80% |
65% ≤ Ef < 80% |
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F9 |
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Ef > 95% |
Ef > 95% |
Ef > 80% |
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| NBR ISO29463 |
Overall Value |
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Local Value (a, b) |
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EN 1822 |
| Filter Class and Group |
Efficiency (%)
to MPPS |
Penetration (%)
to MPPS |
Efficiency (%)
to MPPS |
Penetration (%)
to MPPS |
Class and Group
of the Filter |
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85 ≥ |
≤ 15 |
N/A c |
N/A c |
E10 |
| ISO 15E |
95 ≥ |
≤ 5 |
N/A c |
N/A c |
E11 |
| ISO 20E |
99 ≥ |
≤ 1 |
N/A c |
N/A c |
E12 |
| ISO 25E |
99,5 ≥ |
≤ 0,5 |
N/A c |
N/A c |
E12 |
| ISO 30E |
99,9 ≥ |
≤ 0,1 |
N/A c |
N/A c |
E12 |
| ISO 35H (D) |
99,95 ≥ |
≤ 0,05 |
99,75 ≥ |
≤ 0,25 |
H13 |
| ISO 40H (D) |
99,99 ≥ |
≤ 0,01 |
99,75 ≥ |
≤ 0,05 |
H14 |
| ISO 45H (D) |
99,995 ≥ |
≤ 0,005 |
99,975 ≥ |
≤ 0,025 |
H14 |
| ISO 50U |
99,999 ≥ |
≤ 0,001 |
99,995 ≥ |
≤ 0,005 |
H14 |
| ISO 55U |
99,9995 ≥ |
≤ 0,0005 |
99,9975 ≥ |
≤ 0,0025 |
H14 |
| ISO 60U |
99,9999 ≥ |
≤ 0,0001 |
99,9995 ≥ |
≤ 0,0005 |
U15 |
| ISO 65U |
99,99995 ≥ |
≤ 0,00005 |
99,99975 ≥ |
≤ 0,00025 |
U16 |
| ISO 70U |
99,99999 ≥ |
≤ 0,00001 |
99,9999 ≥ |
≤ 0,0001 |
U16 |
| ISO 75U |
99,999995 ≥ |
≤ 0,00005 |
99,9999 ≥ |
≤ 0,0001 |
U17 |
(a) See item 7.5.2 of NBR ISO 29463-1 and ISO29463-4
(b) Penetration values lower than those contained in this Table may be agreed between customers and supplier
(c) Group E filters cannot and must not be leak tested for classification purposes.
(d) For group H filters, the local penetration is given by the particle scanning method for the MPPS. Alternative limits may be specified when the photometer and oil mist leak test are used.
