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7

8

9

FOAM

NRR

Rating

Noise

Reduction

Rating

28DECIBELS

(WHEN

USED

AS

DIRECTED)

THE

RANGE

OF

NOISE

REDUCTION

RATINGS

FOR

EXISTING

HEARING

PROTECTORS

IS

APPROXIMATB..Y

OTO

30

(HIGHER

NUMBERS

DENOTE

GREATER

EFFECTIVENESS)

Hearing Lab Technology, LLC FOAM

Grand

Prairie,

TX 75050

~':"c.=-

&EPA

prior to

purchase

.

LABEL

REQUIRED

BY

U.S.

E.P.A.

REGULATION

40

CFR Part 211, Sl!hpa,t B.

1/3

Octave

Band

Center

(Hz)

125

250

500

1000

2000

3150

4000

6300

8000

Mean

Attenuation

(dB)

29

.8

31

.4

33

.1

36

.3

39.0

40

.8

39

.6

45

.6

46.3

Standard

Deviation

(dB)

2.9

3.0

4

.1

4.5 2.5 3.1

3.0 3.4

NRR28

TEST

REPORT

NUMBER:

Vf-

HEAR

-

3/25/18-1

HP.P

Important:

NRR

is

not

attenuatio

n,

and

the

labeled

NRR

for

most

earplugs

does

not

r

eprese

nt

fyrical

performance

.

Wh

i

le

the

lab

ele

d

NRR

is

28

dB

,

the

typica

user

can

expect

to

obtain

a

h

ig

her

leve

l

of

attenuation

across

frequencies

when

the

earplugs

are

used

as

directed

and

the

device

is

off.

14

4.5