Defendear  Ltd
Mid  Road  Industrial  Estate
Prestonpans
East  Lothian
EH32  9JB
Scotland


Tel:   01875  813  355
Fax:  01875  814  022
Email:  
     

Introduction

Benefits

Specification

Applications

Hearing Tests

Contact

Location

User Guide

Sound Clips

  • If you wish to hear the sound clips, please allow a few moments for downloading......
  • ......  ......Click to hear sound without a Defendear product.

  • ......  ......Click to hear sound with a Defendear product.
Defendear® Attenuation Table
  Frequency (Hz) 63 125 250 500 1k 2k 4k 8k
  Mean Attenuation 9.1 10.1 11.9 16.2 20.6 28.9 36.1 26.8
  Standard Deviation 5.3 3.7 3.1 3.5 3.2 4.5 3.8 4.4
  Assumed Protection 3.8 6.4 8.9 12.6 17.4 24.4 32.3 22.4

Noise Level Table
How Much Noise is Too Much?
Noise Source Decibels
Jet Plane 140
Shotgun Blast 140
Riveting Steel Tank 130
Automobile Horn 120
Sandblasting 112
Woodworking Shop 100
Punch Press 100
Pneumatic Drill 100
Boiler Shop 100
Hydraulic Press 100
Car Manufacturing Plant 100
Average Factory 80-90
Office Equipment 80
Busy Traffic 75
Conversational Speach 66
Average Home 50
Quite Office 40
Whispered Speach 30
Noises over 140 dB cause PAIN
Exposure to noises over 90 dB harms hearing


Key to Noise Level Table......
  • ......          ......the use of a Defendear product is required.
  • ......          ......the use of a Defendear product is optional......but is recommended.
  • ......          ......the use of a Defendear product is not required..

 A Word in Your Ear...

...The Ultimate in Personalised Hearing Protection