What Is PET Biochemical Cotton Filter Media?
PET biochemical cotton—sometimes called resin mesh filter media or mesh panel filter cotton—is one of the most widely used filter materials on the market. In aquariums it works as a biological filtration substrate: beneficial nitrifying bacteria colonise its surface and convert toxic ammonia (NH₃/NH₄⁺) and nitrite (NO₂⁻) into far less harmful nitrate (NO₃⁻). Beyond aquaculture, the same resilient, open-structure media is cut and framed into panel filters for air and water treatment.
Key Material Properties
- Made from an environmentally friendly, rigid coarse-filament material that is ideal for colonising nitrifying bacteria.
- High elasticity and large surface area; resists tearing and stays effective underwater for 5+ years without loosening.
- Resistant to chemicals, water, light and flame; water-permeable, breathable and temperature-stable.
- Reusable: can be rinsed and cycled repeatedly, lowering lifetime operating cost.
- Effectively traps suspended solids while maintaining low resistance.
Standard Sheet Sizes & Density
Standard roll/sheet sizes are 1 m × 2 m × 30 mm and 1 m × 2 m × 38 mm, with a media density of 40 kg/m³. Sheets can be cut to customer-specified dimensions, and a rigid outer frame can be added to build a framed panel filter.
Framed Panel Filter Models
| Model | Dimensions W×H×D (mm) |
|---|---|
| HBCF-20X10X2 | 492 × 238 × 46 |
| HBCF-20X16X2 | 492 × 390 × 46 |
| HBCF-20X20X2 | 492 × 492 × 46 |
| HBCF-24X24X2 | 594 × 594 × 46 |
| HBCF-25X16X2 | 619 × 390 × 46 |
| HBCF-25X20X2 | 619 × 492 × 46 |
Typical Applications
- Automotive paint booths and factory painting workshops (overspray capture).
- HVAC supply/return air duct filtration.
- Condensate noise reduction and oil–water separation.
- Sewage and sludge treatment plants, waterworks, cooling towers, swimming pools, fish ponds and hatchery spawning collection.
Frequently Asked Questions
What is PET biochemical cotton?
It is a rigid, open-structure synthetic filter media made from PET, also called resin mesh or mesh panel filter cotton, used for both biological and mechanical filtration.
How does it work in aquariums?
Beneficial nitrifying bacteria colonise its large surface area and convert toxic ammonia and nitrite into far less harmful nitrate, while the mesh traps suspended particles.
Where else is this media used?
Beyond aquaculture it is cut and framed into panel filters for air and water treatment in HVAC, pre-filtration, and general coarse filtration duties.
How is it maintained?
Rinse or backwash the media to remove trapped solids and restore flow; because it is reusable, it is replaced only when the structure breaks down.
Frequently Asked Questions
What is PET biochemical cotton?
It is a rigid, open-structure synthetic filter media made from PET, also called resin mesh or mesh panel filter cotton, used for both biological and mechanical filtration.
How does it work in aquariums?
Beneficial nitrifying bacteria colonise its large surface area and convert toxic ammonia and nitrite into far less harmful nitrate, while the mesh traps suspended particles.
Where else is this media used?
Beyond aquaculture it is cut and framed into panel filters for air and water treatment in HVAC, pre-filtration, and general coarse filtration duties.
How is it maintained?
Rinse or backwash the media to remove trapped solids and restore flow; because it is reusable, it is replaced only when the structure breaks down.
Specify the right heat exchanger
Our engineers size the core to your airflow, temperature and pressure-drop budget, and select plate, rotary or heat-pipe recovery by application. Read the heat exchanger guide or contact us for a specification.
Related products
Plate, wheel or pipe recovery for HVAC and ventilation.
Stationary, high-surface-area cores for air and liquid.
High-effectiveness energy recovery for large airflows.
Passive, fully separated streams for clean applications.
