Q1- What are the types of respiratory masks? and What is the use of each respiratory masks?
A1- The most common respiratory masks are: 1- Three-layer masks (known as surgical masks) 2- N and FFP series masks with valves 3- N and FFP series masks without valves.

Q2- What is a filter mask?
A2- Masks with valves are mistakenly called filter masks. The valve in these masks is a hatch that is used to facilitate the outflow of exhaled air.

Q3- Where is the mask valve?
A3- The exact location of valve, varies depending on the taste and design of the manufacturer. The valve for the exhaustion of air are located on the N95 and FFP masks.

Q4- How often can we use a respiratory mask? And Is it possible to wash the respiratory masks?
A4- Usually all masks are disposable and the time of usage depends entirely on the conditions and environment in which they are used. The average lifespan of valve mask is usually between 6-8 hours, depending on safety tips. According to the standards, respiratory masks are disposable and washing masks are not recommended.

Q5- Which type of masks are suitable for medical staff?
A5- N95, N99, FFP2, and FFP3 masks without valves.

Q6- What is the method for evaluating the efficiency of respiratory masks?
A6- The only method for evaluating the efficiency is using of filter tester that is accurate and approved by authorities.

Q7- Is it possible to tell from the appearance of the masks that the mask class is (FFP2, FFP3, N95, N99)?
A7- No, the only method for evaluating respiratory masks is using filter tester equipment based on the relevant standards.

Q8- What is nanofiber respiratory masks? And how can you be sure of their quality?
A8- By using nanofiber in respiratory masks, the efficiency of the mask fabric is increased. To be sure of the quality pay attention to the relevant permissions.