Custom ear plugs for the well-being of your employees

These custom moulded ear plugs outperform all other devices on the market. They enable interpersonal communication and are comfortable, convenient and cost-effective. These are the most sought-after hearing protection devices worldwide.

How do we create such a comfortable hearing protector?

Custom hearing protectors 3D scanning process

Our manufacturing process works as follows:

  • We take an impression, or mold, of the ear canals of every employee
  • The mould is 3D scanned to create a computerised image
  • The computerised image is modelled into the smallest, lightest and most comfortable hearing protector possible

This comprehensive process ensures that each hearing protection device fits perfectly, with 100-micron precision (the width of a strand of hair). They are so comfortable that they can be worn all day.

Protected, but not isolated

The earplug is personalised for each employee by our filter selection process: SAPAN® considers the noise level, level of perception, and the unique requirements of each employee.

Qeos offers two ranges of filters, each providing a different level of attenuation

Best Hearing Protection to communicate
Do you need to communicate?


Qeos Original Sound

The noise level is reduced evenly across all frequencies. This molded earplug comes with 3 Uniform Response type filters.

Qeos Original Sound - Best Hearing Protection
  • Even attenuation across all frequencies
  • 3 filters: SLC80 15, 20 and 24
  • 6-Year Warranty
Qeos Original Sound - Uses

Best Hearing Protection to work in a very noisy environment
Do you work in a very noisy environment?


Qeos XT

The noise level is reduced across most frequencies. The hearing protection device comes with 4 different filters.

Hearing Protection Qeos XT to work safely in high noise levels
  • High Frequency Attenuation
  • 4 filters: SLC80 22, 23, 24 and 27
  • 6-Year Warranty
Qeos XT - Uses

Experience the attenuation and the effectiveness of the devices through these simulations:

Noise exposure in a printing company.

Without hearing protection

With Qeos OS Custom Moulded Ear Plugs

With Qeos XT Custom Moulded Ear Plugs

Your employees' working conditions can change; their hearing protectors can evolve as well!

Is your employee moving into a different position? Perhaps working with a new, quieter machine?

Use SAPAN® and, if necessary, change the ear protectors' filters, using the Filter Box. It takes less than two minutes!

Opt for:

  • Safety and convenience: Your employees always have the right level of protection, as their filters can be changed on the spot.
  • Timeliness: Employees can change their filters whenever necessary, on their own. It's easy and fast.
Custom hearing protectors for every position

Maintaining your custom earplugs is simple

Primo Optimum kit

Your individual noise protectors need daily cleaning, and we've made this as quick and easy as possible

  • By using Cleanil effervescent solution, you can be sure that your earplug is perfectly clean, and that you are maintaining the effectiveness of the acoustic filter.
  • Our custom ear plugs have handles (both with and without a cord) which ensure that you never need to touch the actual custom moulded ear plug, no matter how dirty your hands are.
  • Our ear plug material, Crylit, is non-porous so it never absorbs dirt and can be quickly and easily cleaned with our Cleanil wipes.

With or without a handle, and with or without a cord, Cotral Lab Custom Hearing Protection Devices adapt to your employees’ needs, at their workstations.

Cotral Lab hearing protectors are Food Processing Industry compliant. A fully detectable electro-magnetic ball and cord are offered.

Conveniently manage your individual noise protectors online

Your personal and secured online access to the customer area of Cotral Lab’s website makes it easy to manage your devices in one central location. You can also place orders and facilitate implementation of solutions from the very beginning.

The ear molds, once taken on-site, within the timeframe you decide, are digitally stored on our servers. This saves you time in cases where remanufacturing is required.

Customer area

You have no worries with the Effi‐6 total guarantee!

Effi-6 total guarantee

Enjoy the Effi-6 Guarantee for six years from date of purchase. You can have any hearing protector remanufactured, at no cost to you, in the event of:

  • A material defect
  • Lack of comfort
  • Protector inefficiency, as demonstrated by CAPA©

Learn more about the validation of the effectiveness

Frequently Asked Questions about hearing protection devices

Hearing aids are instruments that amplify sound. They are used when people already suffer from hearing loss. Hearing protection devices, such as Cotral custom earplugs, on the other hand, prevent hearing loss.

Qeos molded earplugs meet one of the main requirements of the food industry: a detectable ball is offered as an option. You can complete that with a detectable cord. Furthermore, for better visibility, Qeos hearing protection devices are blue in color.

Your Prevention Technician will select the filters and the hearing protection model with the help of the SAPAN method. After asking the user a list of questions, the application proposes a list of hearing protection devices that are suitable for each person. Each employee experiences a reduction, depending on his level of exposure to his sound perception requirements or an eventual hearing deficit. The employee is protected from noise without being over-protected.

SNR is the acronym for Single Number Rating. It is the global index of impairment, a weighted average of impairment on all measured frequencies (63, 125, 250, 500, 1000, 2000, 4000, and 8000 Hz).

Cotral hearing protection devices are guaranteed for a period of 6 years. Beyond that, we advise you to take a new set of impressions or assess their real efficiency with a CAPA test.

You will get a unique guarantee in the hearing protection device market: the Effi-6 Guarantee. It covers the product if the instrument breaks, as well as the comfort of noise reduction. Your hearing protection is offered with a money-back guarantee.

There are two types of filters, both of which reduce noise differently:

  • Flat response filters reduce sound without distorting it. Imagine being able to reduce the ambient volume, just as you do with your MP3 player or your Stereo system. These filters offer the same sound quality, with reduced volume. These hearing protection devices are equipped with filters that are recommended for repair technicians who must listen for the slightest malfunction, people who have to communicate in a noisy environment, the supervising staff, or people working in the world of music or show-business.
  • HFA (High Frequency Attenuation) filters soften noises on high frequencies. These filters are useful in very noisy places: industries, metallurgy, BTP, etc.

In order to ensure that the hearing protection device is comfortable, it is highly recommended to use Cleanil wipes every day to clean impurities such as dirt or earwax. Cleaning the device weekly using Cleanil tablets maintains the efficiency of the acoustic filter.

In cases where the Individual Noise Protector limits are exceeded, it is possible to increase noise reduction with double protection. This is composed of an intra-ear plug (standard or customized) and shell-shaped headband.

How is the noise reduction of double protection calculated?
The formula is as follows: 33 x log ((0.4 x reduction of intra) + (0.1 x reduction of ear muffs)) (Etude A. Damongeot et al.)
Example: A molded earplug with an attenuation level of 32 dB and an ear muff with an attenuation level of 35 dB = 40 dB attenuation.

An anti-noise earplug is not more efficient. If an employee is exposed to a noise level of 85 dB(A), equipping him with an Individual Noise Protector with an attenuation level of 30 dB would be a mistake. If the worker is too isolated, he will not tolerate his hearing protection devices. He will be tempted to remove them in order to listen to warning signals or communicate with his colleagues. The EN458 norms recommend a threshold level between 70 and 75 dB(A). The objective is to reduce the perceived noise levels under 75 dB(A).

The cost can vary, depending on several factors. The amount may seem to be higher when compared to standard disposable earplugs, but if you compare overall spending over 6 years, you will see that Cotral complete hearing protection solution is more economical.

Cotral Prevention Laboratory technicians come to your site to take your employees’ ear impressions. This meeting enables an exchange of information on the risks related to noise and the usage of Cotral molded earplugs. Prevention Technicians use the SAPAN method to determine which hearing protection device is most suitable for each employee, based on his specifics and the nature of his work. Everything is configured with respect to the functioning of your organization.