Barrier masks meet a less ambitious level of requirements than surgical masks and FFP2 which must be used as a priority by healthcare personnel and exposed populations. Responding to criteria validated by nearly 150 experts, the SR21 Barrier Face Mask(s) aim to provide additional protection to any healthy person, in addition to barrier gestures and the measure of distance.

The SR21 Model I (v.1) Barrier Face Mask is intended for the public and in particular for any healthy or asymptomatic person.
The use of a barrier mask does not in any way exempt the user from the systematic application of barrier gestures, which are essential, as well as the rules of social distancing aimed at combating viral infections.

The level of filtration we follow refers to garments that block particles up to 3 µm in size, which is larger than the size of the Covid-19 virus. The virus is transported in micro-droplets, of sizes much larger than that of the virus itself, this is why the mask ensures a relative capacity of retention, in addition to the barrier gestures. Based on the list of materials approved by authorities in EU countries for the development of Barrier Face masks, we consider that our SR21 Model I (v.1) Barrier Face mask offers: 90 % ≤ protection < 95 %.

SR21 Barrier Mask Model I (v.1)
Number of Layers: Three (Special manufactured Tricot Garment)
The way of manufacture gives very high protection percentage based on EU countries rules and regulations.
– Includes flexible nose adjustment element
– Two high quality, adjustable straps

Internal silk made label showing the following:
– Certifications (OECO-TEX 100, ISO 9001:20015, ISO 14001:2015
– Logo of SR21 – Institute for Scientific Research
– Guidelines URL: sr21.ch/bmask
– Made in Europe

– STANDARD 100 by OEKO-TEX® is one of the world’s best-known labels for textiles tested for harmful substances. It stands for customer confidence and high product safety.

– ISO 9001:2015
 is defined as the international standard that specifies requirements for a quality management system (QMS). Organizations use the standard to demonstrate the ability to consistently provide products and services that meet customer and regulatory requirements.

– ISO 14001:2015
specifies the requirements for an environmental management system that an organization can use to enhance its environmental performance.

No, these are different masks.

An FFP mask is a respiratory protection device (standard EN 149). It is intended to protect the wearer from both inhalations of droplets and airborne particles, which may contain infectious agents. Wearing this type of mask is more restrictive (thermal discomfort, respiratory resistance) than that of a surgical mask.

A surgical mask is a medical device (standard EN 14683). It is intended to prevent the projection towards the surroundings of the droplets emitted by the person wearing the mask. It also protects the wearer against projections of droplets emitted by a person opposite. However, it does not protect against inhalation of very small airborne particles

Barrier masks do not have the performance of FFP2.
People should adjust these masks above the nose and under the chin and observe the same hygiene measures as for other masks.

When purchasing Masks, avoid dubious or unknown websites or sellers, as the quality of their products is not assured.

A reusable Barrier Mask must be machine washed with conventional detergent, at 60 degrees for at least 30 minutes. Drying must be carried out in the open air, before ironing with steam at a temperature which does not damage the fabric.

It is advisable to wear it on bare skin by washing your hands with soap and water or using an alcohol-based solution before handling the mask.
Place the barrier mask on the face (mouth and nose covered as well as the chin).  You can check that the barrier mask is correctly fitted by checking the tightness and the difficulty in breathing. Adjust the nose element and the hoop/loop straps accordingly. Make sure you breathe as normally as possible. Once adjusted, do not touch the barrier mask with your hands. Each time the barrier mask is touched, the user must wash their hands with soap and water or with an alcohol-based solution.

The barrier mask should be washed whenever it is soiled, wet or improperly positioned on the face.
It should not be put in the waiting position on the forehead or under the chin during and after use.
The wearing time of the mask is 4 hours maximum. During this period, the mask can only be used several times if it is removed according to the instructions, temporarily stored or hung to offer the least possible contact, and put back according to the instructions.

In order not to be contaminated when removing a barrier mask, it must be properly removed and isolated, either to be thrown away or to be washed.

For this, it is recommended to:
Remove protective gloves if necessary.
Wash hands with soap and water or use a hydroalcoholic solution.
Remove the barrier mask by gripping the hoop/loop set from the back without touching the front part of the barrier mask.
Place the barrier mask to be washed in a specific container (clean plastic bag).

Our Model I Barrier Mask washing thresholds are high: 30 or more washes can be claimed. Our tests have shown that a much bigger number of washes is possible. In general, a barrier mask must at least be able to undergo 5 washes and dryings. It is a realistic minimum threshold, according to the experts gathered, for a mask made from non-professional fabrics. Beyond the fabric, it is the garment that can show signs of weakness most quickly. In all cases, each washed mask must be inspected by the user before being reused.

The following list includes examples of the use of the barrier mask which should be avoided and which is fueled by the feedback from experience:

  • The barrier mask cannot be used for protection against chemicals.
  • The barrier mask should not be frozen. The viral agent is stored and at 4 ° C, it does not lose its infectious nature.
  • The rules of social distancing must be respected despite the wearing of a barrier mask.

Yes, to remove any folds after washing and finalize the drying. Particular care must be taken not to damage the components of the mask, in particular the elastic straps. Please note that using an iron is not a substitute for washing as recommended by the health authorities.

A hairdryer is not suitable for cleaning (prefer machine washing at 60 ° C for 30 minutes minimum). It can nevertheless be useful to finalize the drying of a barrier mask but beware: poor control of the temperature level can degrade the filter material, especially if it is heat-sensitive.

This is an additional recommendation: washing beforehand is necessary if, during a previous cycle, you accidentally added a used mask with other clothes, when washing with a temperature below 60 ° C. If you wash all your masks according to the recommendations of the health authorities (60 ° C for at least 30 minutes), you do not need to perform a vacuum wash beforehand.

Yes, you can, for example, wash your masks used at the same time with sheets or towels, which often accept washing at 60 ° C.
It is important that the mechanical aspect of washing is preserved. You can store the masks used in a specific container (clean and resealable plastic bag) and group together the washes

Boiling your barrier mask to clean it can damage it.
This practice is not recommended: prefer machine washing at 60 degrees for at least 30 minutes.

The current SR21 Model I Barrier Mask is the first version of this type. Others will follow soon including a special model for kids under the age of 7 years old. Each individual user is advised to adjust the Barrier Mask based on the shape of the head. This version (v.1) of Model I is suitable for adults only. Respirators and Barrier Masks are not designed to fit children. The faces of children may be too small for the respirators or Barrier Masks to fit properly and may not provide adequate protection. It may be better for children to wear a surgical mask if protection is needed.

We accept orders from major suppliers at national level, governments and various types of organisations only.
For more information please contact our knowledge and technology transfer unit at sr21@sr21.ch

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