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Tested according to ANSI S3.19-1974
Helmet Mounted Ear defenders
Size Range: Small, Medium, Large
SANA 25
Frequency (Hz)
125
250
Mean Attenuation (dB)
12.1
14.9
Standard Deviation (bB)
3.1
2.9
SANA 30
Frequency (Hz)
125
250
Mean Attenuation (dB)
16.5
18.8
Standard Deviation (bB)
3.2
2.3
SANA 34
Frequency (Hz)
125
250
Mean Attenuation (dB)
20.8
23.2
Standard Deviation (bB)
3.1
2.1
6
Attenuation Data
500
1000
2000
3150
4000
6300
22.7
35.3
36.6
37.3
37.7
36.3
2.3
3.2
3.1
3.6
2.6
4.1
500
1000
2000
3150
4000
6300
28.5
40.1
38.5
41.5
39.1
39.4
2.9
3.3
3.3
4.4
3.9
4.9
500
1000
2000
3150
4000
6300
33.5
41.4
38.5
41.0
41.4
40.1
2.6
3.5
2.8
2.8
3.1
3.6
SANA 26
8000
NRR
Frequency (Hz)
36.0
Mean Attenuation (dB)
19dB
Standard Deviation (bB)
4.4
SANA 31
8000
NRR
Frequency (Hz)
38.9
Mean Attenuation (dB)
24dB
4.4
Standard Deviation (bB)
SANA 36
8000
NRR
Frequency (Hz)
39.7
Mean Attenuation (dB)
28dB
4.8
Standard Deviation (bB)
Attenuation Data
Tested according to ANSI S3.19-1974
Headband Ear defenders
Size Range: Small, Medium, Large
125
250
500
1000
2000
3150
12.5
17.6
24.4
37.3
37.2
38.0
2.7
2.8
2.9
2.8
2.2
3.8
125
250
500
1000
2000
3150
18.4
19.3
29.9
42.4
39.3
38.9
1.9
2.1
2.3
3.6
3.6
3.1
125
250
500
1000
2000
3150
24.1
25.6
39.4
45.6
41.0
41.8
2.2
2.0
3.1
3.9
3.7
3.9
4000
6300
8000
NRR
40.5
37.8
36.9
21dB
3.6
4.1
4.7
4000
6300
8000
NRR
35.8
37.4
36.9
25dB
3.1
3.9
4.3
4000
6300
8000
NRR
41.2
40.7
40.1
30dB
3.8
3.1
3.9
7
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