EARMUFF CE GB5893.3-86

GB5893.3-86 is a Chinese national standard (Guobiao, GB) that outlines testing methods for ear protection devices, including earmuffs (earcaps). This specific part, GB5893.3-86, likely refers to Part 3 of the standard, which is focused on the sound attenuation performance (sound decrement) of ear protection.

Main Parameters Measured:

1. Frequency Bands:

   • Attenuation is measured across standard octave or one-third octave bands, typically at: – SOUND DECREMENT (dB)

     • 125 Hz                                                                                                                                                        –           ≥8

     • 250 Hz                                                                                                                                                       –          ≥10

     • 500 Hz                                                                                                                                                       –         ≥18

     • 1000 Hz                                                                                                                                                      –        ≥25

     • 2000 Hz                                                                                                                                                     –        ≥25

     • 4000 Hz                                                                                                                                                     –        ≥30

     • 8000 Hz                                                                                                                                                     –        ≥30

Note:

While GB5893.3-86 is similar in structure to ISO 4869-1, the measurement principles are generally aligned globally. If you’re testing or certifying earmuffs in China, referencing this GB standard is essential