.5mL Centrifugal Filter Units with Low Binding PES Membrane, >90% Recovery, DNase, RNase & Pyrogen-Free

Alkali Scientific™ 0.5 mL disposable ultrafiltration centrifugal devices provide a highly efficient solution for protein concentration, desalting, and buffer exchange of biological samples. Equipped with a 50 kDa nominal molecular weight limit (NMWL) membrane, these devices enable rapid sample processing while achieving over 90% recovery.

Designed for small-volume applications, the device supports a maximum initial volume of 0.5 mL and concentrates samples down to a final volume of approximately 5–10 µL. Its single-use polypropylene construction ensures durability and chemical resistance, while compatibility with both swinging-bucket and fixed-angle rotors allows for versatile use. With a maximum RCF of 14,000 × g, these devices offer fast and reliable ultrafiltration performance.

Material Composition:

• Outer Tube: Polypropylene (PP)
• Filter: Methacrylate-butadiene-styrene (MBS)
• Filter Membrane: Polyethersulfone (PES)
• Tube Cap: High-density polyethylene (HDPE)

Key Features:

• 50 kDa NMWL membrane for efficient protein concentration
• Over 90% sample recovery for high-efficiency processing
• Single-use polypropylene construction ensures durability and chemical resistance
• Compatible with swinging-bucket and fixed-angle rotors for versatile use
• Maximum initial volume: 0.5 mL
• Maximum RCF: 14,000 × g
• Typical final concentrate volume: 5–10 µL
• Fast processing for protein concentration, desalting, and buffer exchange
• 100% tested for production line air tightness to ensure reliability

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