CN95 certification is based on test standards previously developed by the CATARC research institute in its market study on the Chinese cabin air filter market. Mann+Hummel is supporting vehicle manufacturers in the certification process.

CN95 certification is based on test standards previously developed by the CATARC research institute in its market study on the Chinese cabin air filter market. Mann+Hummel is supporting vehicle manufacturers in the certification process.

Within large volume settings, HEPA air filtration systems circulate air in a laminar flow environment, removing any airborne contamination before it is re-circulated back into the environment.

CN95 certification is setting new standards in the cabin air filter market, although it is not yet a mandatory requirement for the sales of cabin air filters in China.

The fire safety of room ventilation systems in buildings is regulated by EN 15423. For air filters, it states that materials must be classified regarding reaction to fire under EN 13501-1

The air filter consists of two parts: a filter element and a shell. The main requirements of an air filter are high filtration efficiency, low flow resistance, and continuous use for a long time.

Along with fiberglass, some HVAC filters are made of pleated cotton.They consist of the same cotton used in countless other everyday products. The cotton is pleated and formed into an HVAC filter for the purpose of air filtration.You might be surprised to learn that pleated cotton HVAC filters are even more effective at removing particulate matter from the air than fiberglass HVAC filters. On the Minimum Efficiency Reporting Value (MERV) scale, they have a rating of six to 13, compared to just three to four for that of fiberglass HVAC filters.Another advantage of pleated cotton HVAC filters is their ability to produce static electricity.Why is this important? When a pleated cotton HVAC filter produces static electricity, particulate matter will cling to it.With that said, pleated cotton HVAC filters are more expensive than fiberglass HVAC filters, and they usually have a shorter lifespan. 

Is it safe to drink this water? I ask myself that question often and most of the time the answer is no. There often is the risk that bacteria, chemicals, and pathogens, specifically Giardia, are in the water. Rainwater or dew that is resting on non-poisonous plants such as moss is safe to drink as is. There are a few ways to process water to make it safe to drink: boiling it, using chemical purifiers, and filtration. This article will provide tips on how to make and use a survival water filter.

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