Ear and Hearing Protection laboratories may also do the following tests:

Noise Reduction Rating (NRR) Testing: Measures the device's effectiveness in reducing noise exposure to the wearer?s ear Testing
Frequency Analysis: Assesses how well the protection device attenuates different frequencies to understand its performance across various noise environments Testing
Comfort and Fit Testing: Evaluates how comfortable the protection devices are during extended wear and their ability to fit securely Testing
Durability Testing: Determines the longevity of the device under regular or intense use Testing
including resistance to wear and environmental factors Testing
ANSI Standards Compliance Testing: Ensures the products meet the American National Standards Institute requirements for hearing protection Testing