Filtration is at the heart of every clean, safe, and efficient industrial process. Whether you are running a pharmaceutical granulation line, a chemical processing plant, or a food & beverage bottling facility, the filter bag you choose directly impacts product quality, operational costs, and regulatory compliance.

1. Identify Your Filtration Type

The first step is distinguishing between liquid filtration and dry/air filtration. Liquid filter bags are designed to capture solid particles from process fluids, while dry filter bags handle dust and particulate from gas streams.

2. Choose the Right Material

Material selection depends on the chemical nature of the process fluid, temperature, and particle type. Common materials include:

• Polypropylene (PP) – Chemical resistant, suitable up to 90°C
• Polyester (PET) – Good mechanical strength, up to 150°C
• Nylon – Excellent abrasion resistance
• PTFE (Teflon) – For highly corrosive or high-temperature applications
• Nomex / Aramid – Thermal applications up to 200°C

3. Select the Correct Micron Rating

Micron rating determines the smallest particle the bag will capture. For pharmaceutical applications, ratings between 1–25 µm are common. For coarser industrial liquids, 50–200 µm may be sufficient.

4. Consider Construction Type

Sewn bags are cost-effective for general use. Welded (heat-sealed) bags provide a leak-free seal for critical applications. Hardshell (PP shell) bags offer rigidity for high-flow applications.

At Skytech Ultrafab, our technical team can help you select the exact specification for your process. Contact us for a free consultation.