The respirators have a very good quality, robustness and a very high protection in FFP3 NR D version. The material can be carried virtually no particles, provided that the respirator and tight against the sunken nose piece was pressed or molded to the nose. This can be any check for themselves on the nasal mucosa. Through the outlet valve can be easily exhaled, which is very important. With masks without exhaust the overpressure pushes under the mask while exhaling the mask from his face briefly, even if only slightly, and thus particles come off on the contact surface between the mask and the skin, which then lead to skin irritation and inflammation. Furthermore, the moist exhaled air can be quickly blown out through the exhaust valve so that no Kondenzwasserbildung takes place under the mask on the filter material and the inhalation thereby further remains relatively easy. Inhalation is relatively normal exhalation, however slightly, from equip. These masks should be missing in any household.
The application comes after a few practice tests actually very easy. The mask is a bit more expensive than others, but the protection is really good. Certainly, protection against gases does not offer this mask, but it is not determined.