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7

8

9

3-FLANGE

NRR

Rating

Noise

Reduction

Rating

24DECIBELS

(WHEN

USED

AS

DIREC

I

ED)

THE

RANGE

OF

NOISE

REDUCTION

RATINGS

FOR

EXISTING

HEARING

PROTECTORS

IS

APPROXIMATELY

OTO

30

(HIGHER

NUMBERS

DENOTE

GREATER

EFFECTIVENESS)

Hearing Lab

Technology,

LLC

Grand Prairie, TX

75050

Fedenll law

prohibits

nimoval

of

this label

prior

to

pu'dwM.

&EPA

3-FLANGE

LABEL

REQUIRED

BY

U.S.

E.P.A.

REGULATION

40

CFR Part 211,

Subpart

B.

1

/3

Odave

Band

Center

(Hz)

125

250

500

1000

2000

3150

4000

6300

8000

Mean

Attenuation

(dB)

35

.3

32

.9

37.8

35.2

36.0

36.1

33.6

35.2

Standard

Deviation

(dB)

5.6

4.3

4.7

5.0

3.9

4.8 5.t

5.0

NRR24

TEST

REPORT

NUMBER

:

Q7404A

•

Important:

NRR

is

not

attenuation,

and

the

labeled

NRR

for

most

earplugs

does

not

represent

tyrical

performance

.

While

the

labeled

NRR

is

24

dB,

the

typica

user

can

expect

to

obtain

a

h

igher

level

of

attenuation

across

frequencies

when

the

earplugs

are

used

as

directed

and

the

device

is

off.

15

41

3.8