Polyethersulfone (PES) Pellet Storage Tank Selection

Storing Polyethersulfone? Start Here

Polyethersulfone (PES) is a high-performance engineering plastic often used in ultrafiltration membranes, medical equipment, and hot-water systems. It's supplied as amber pellets that need careful handling due to their moisture sensitivity. These pellets are typically stored in large bags or drums and require drying before processing to ensure quality. PES is known for its high-temperature resistance and flame retardance, making it a popular choice in demanding industrial applications.

Can you store it in a poly tank?

No, poly tanks are not suitable for storing PES pellets. Instead, use stainless steel or glass-lined steel tanks to maintain the integrity and quality of the pellets, especially for medical or pharmaceutical applications.

Moisture Sensitivity is Key

PES pellets are hygroscopic, meaning they absorb moisture from the air. This can lead to defects during processing, so it's crucial to keep them dry. Use a drying hopper system with temperature control to ensure the pellets are ready for use.

The safety that actually matters

• Use stainless steel or glass-lined tanks for storage.
• Ensure drying systems are in place to prevent moisture absorption.
• Match gaskets to the manufacturer chart for compatibility.

Common questions

Can PES pellets be stored outdoors?

It's not recommended due to moisture sensitivity. Use indoor facilities with controlled environments.

What type of drying system is needed?

A system that can maintain high temperatures and extended drying times is essential for PES.

Are there specific regulations for storing PES?

Yes, especially for medical-grade applications. Follow USP, FDA, and NSF guidelines.