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A) STANDARD EN 352-2:2020
3M strongly recommends personal fit testing of hearing protectors. Research suggests that users may receive less noise
reduction than indicated by the attenuation label value(s) on the packaging due to variation in fit, fitting skill, and
motivation of the user.
Refer to applicable regulations and guidance on how to adjust attenuation label values. In the absence of applicable
regulations, it is recommended that the attenuation label value(s) be reduced to better estimate typical protection.
A:A 3M™ Torque™ Eartips
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:B 3M™ PELTOR™ CCC-GRM-25 Communication Eartips
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
A:C 3M™ UltraFit™ Eartips
A:2 MV (dB)
A:3 SD (dB)
A:4 APV = MV - SD (dB)
C) STANDARD EN 352-7:2020
C:A Criterion levels
3M™ Torque™ Eartips
TM
3M™ PELTOR
Torque™ Eartips
C:1 H (dB(A))
105 dB
C:2 M (dB(A))
107 dB
C:3 L (dB(A))
111 dB
C:B Criterion levels
3M™ PELTOR™ CCC-GRM-25 Communication Eartips
3M™ PELTOR™ CCC-GRM-25 Communication Eartips
C:1 H (dB(A))
104 dB
C:2 M (dB(A))
106 dB
C:3 L (dB(A))
110 dB
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
38.1
35.5
40.7
40.9
5.4
5.4
5.7
5.8
32.7
30.1
35.0
35.1
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
35.1
32.5
37.5
37.9
5.5
4.9
5.1
4.8
29.6
27.6
32.4
33.1
A:1 f (Hz)
125
250
500
1000 2000 4000 8000
32.8
30.2
31.6
31.2
6.2
4.5
5.4
4.4
26.6
25.7
26.2
26.8
H
37.5
40.3
44.9
38.4
3.2
3.3
4.2
2.5
34.3
37.0
40.7
36
H
37.1
40.8
44.6
38.0
4.3
4.6
4.7
3.4
32.8
36.2
39.9
35
H
33.0
34.4
37.9
33.1
4.0
4.8
3.9
3.5
29.0
29.6
34.0
30
C:C Criterion levels
3M™ UltraFit™ Eartips
3M™ UltraFit™ Eartips
C:1 H (dB(A))
C:2 M (dB(A))
C:3 L (dB(A))
A:5
M
L
SNR
38.5
37.5
39.7
3.1
4.1
2.6
35
33
37
A:5
M
L
SNR
36.9
34.9
38.5
3.6
4.0
3.3
33
31
35
A:5
M
L
SNR
31.4
30.8
33.4
3.7
4.0
3.5
28
27
30
101 dB
103 dB
108 dB
11 g
10 g
10 g
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