BS EN 352-7:2020

What is BS EN 352-7 about?  

BS EN 352-7 is the seventh part of the hearing protectors multi-series. BS EN 352-7 is a European standard that ensures safety requirements for hearing protectors are met. 

BS EN 352-7 applies to level-dependent earplugs. BS EN 352-7 specifies requirements on construction, design, performance, marking, and user information related to the inclusion of the level-dependent functionality. 

The requirements of BS EN 352-7 are concerned with the level-dependent performance of the earplugs. The criterion levels within BS EN 352-7 are determined to limit the sound pressure level effective to the ear to 85 dB(A). 

Who is BS EN 352-7 for? 

BS EN 352-7 on safety requirements for level-dependent earplugs is useful for: 

• Hearing protector device manufacturers 
• Quality control personnel 
• Hearing protector device designers 
• Acoustic engineers 

Why should you use BS EN 352-7?  

Level-dependent earplugs are designed to provide restoration of external sounds while providing attenuation of sounds at high levels. 

BS EN 352-7 provides you with the performance requirements for level-dependent earplugs that enable soft noises to be conveyed with full strength while eliminating any high frequency or impulse noise, hence improving the quality and performance of level-dependent earplugs. 

Overall, BS EN 352-7 covers all the safety requirements for level-dependent earplugs that assist you to produce high-quality level-dependent earplugs while eliminating hazardous steady-state or impulse noise. 

What is changed since the last update? 

BS EN 352-7:2020 supersedes EN 352-7:2002 and includes some technical changes concerning EN 352-7:2002: 

• Clause 4 new requirements on criterion levels added 
• Clause 5 removed, reference to EN 13819-3:2019, 7.2.3 added 
• Annex A removed 
• Annex B removed, reference to EN 13819-3:2019, 7.2.3 added