Activated Carbon Filters PM2.5 - 5 layers - 10 pcs

✔ PRE-ORDER NOW - Our last batch of filters literally flew off the shelves, but fortunately there are already more on their way. 

✔ 10 x Activated Carbon PM2.5 filters

✔ Replaceable activated carbon filters helps to block dust, pollen, smoke, Volatile Organic Compounds (VOC), mold spores, smog and other airborne contaminants

✔ Compatible with COLAPA Pollution Mask and majority of other dust masks available in the market

✔ Purchase with peace of mind: if the filters do not fit your mask you can return the item and receive 100% refund.

✔ FREE SHIPPING for orders over 39.9$ 

👉 Visit the page Quality Certifications to find documents related to the manufacturing processes of this product and certifications of quality

✅ DURATION OF FILTERS

Duration time for filters depends on the pollution level and the frequency of usage. 
Generally speaking, to protect yourself from pollution or any airborne contaminant, we recommend to replace your filter every 2-3 days (if you are using it for several hours a day) or 18-24 hours of total use.
If you use it in a particularly dusty environment (eg. doing woodworking, gardening, etc) would be better to replace your mask with a new filter after you finish that activity.

✅ CURIOSITY: How do activated carbon filters trap pollutants?

Carbon air filters remove pollutants from the air with a process known as adsorption. Note that this is different from absorption. In absorption, the substance you want to remove (let’s say water) is absorbed into the structure of the absorbent (like a sponge), but it doesn’t become a part of the absorbent on a molecular level. Therefore, when you absorb water with a sponge, the water does not become chemically bonded to the sponge. It just fills in the spaces inside it.

Carbon filters on the other hand use ad-sorption, not ab-sorption. The key difference here is that during adsorption the pollutants stick to the outside of the carbon. Whereas with absorption, the pollutants are absorbed inside the structure itself–as with the sponge.

Carbon is a lattice of carbon atoms connected to each other. When a molecule of some airborne substance comes through the carbon, it can stick to the surface of the bed. The process of adsorption allows carbon air filters to filter organic chemicals and pollutants from the air. 

The problem with the activated carbon bed is that over time, the gaseous pollutants increasingly fill up the adsorption sites of the activated carbon. Once the bed is saturated, the filter can no longer trap pollutants. So, as conditions change, different chemicals may be released from the filter. When a carbon air filter is saturated, you might notice it giving off a strange odor. This is a strong indicator that it’s time to change your carbon filter.