What does CSA mean on earplugs and earmuffs?

You’re going to see some CSA ratings. This is a method used in Canada to evaluate hearing protection devices

this is a simple system based on tests conducted in the same laboratory that tested hearing protection devices in the United States to obtain nrrs. The system instructs users to select appropriate hearing equipment under specific noise exposure level< Each hearing protection device was rated a, B or C CSA recommends: * class C acoustic earplugs or earmuffs can be used for & lt; 90dba noise level * class B sound insulation earplugs or earmuffs can be used for & lt; 95dba noise level * class a sound insulation earplugs or earmuffs can be used for & lt; The noise level of 105dba A and B may have an L associated with it. Therefore, hearing protection is divided into a, B, Al, BL and C Al, BL means that the hearing protection device attenuates at least 20dBA when tested at 125Hz. This is an important factor when choosing hearing protection devices to protect against low frequency noise generally, these categories, such as NRR, are a guide for end users to choose the right hearing protection device. These categories are based on laboratory tests, and the actual noise reduction depends on many factors, including the correct use of equipment, training, maintenance, etc our website solemnly declares that this article is reprinted by network media, only representing the author’s point of view, and has nothing to do with our website. 1f the information column articles and comments violate your legal rights, please call to let us know and we will deal with them in time

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