List of best masks to use in Delhi air pollution
Nov 12, 2017·3M 9332+ Aura. 3M is one of the most popular companies that make pollution masks. Their products are cheaper and still very effective. The 3M 9332+ Aura is N95 certified and offers a similar protection from up to 95% particles. It also has a 3-layer filtration also known as Protection Level FFP3. It also has a single valve for exhaling the air.