Test according to ANSI Specs S3.19-1974
The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Noise Reduction Rating 22 decibels (when used as directed)
The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (Higher numbers denote greater effectiveness).
|Attenuation Chart (ANSI S3.19-1974)|
|Mean Attenuation (dB)||27.5||28.5||28.6||28.8||32.5||38.8||84.4||42.3||43.8|
|Standard Deviation (dB)||4.9||4.3||4.2||3.5||3.5||4.3||5.0||4.8||4.4|
Easy Instructions: Using one hand, reach over head and gently lift ear up as shown to expand ear canal. With other hand, insert the rounded end of ear plug. Press on inserter using a forward "up and down" motion. Use only clean and fresh ear plugs.
Cleaning: Wash with mild soap and water. Dry thoroughly before re-inserting into ear.
Important: Store ear plugs is case to keep clean.
Note: If ear plugs become cut, cracked or unpliable replace with a new ear plug. Inserter is not designed to be removed.
Keep away from infants. This product is non-toxic but may interfere with breathing if caught in windpipe.
For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the above instructions for proper fit. Although hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continuous noise and may not be an accurate indictor of the protection attainable against impulsive noise such as gunfire. The Noise Reduction Rating (NRR) calculated from the attenuation data is 22 dB. Hearos ear plugs must be properly fitted to attenuate noise effectively. Refer to instructions.