15 mL Centrifugal Ultrafiltration Unit, 3 kDa MWCO (Amicon Ultra-15 style) — 2 Units

Two 15 mL centrifugal ultrafiltration units with an Ultracel-style membrane and a nominal 3 kDa molecular weight cut-off. These units are intended for concentrating and desalting biological samples such as small proteins and peptides. They are compatible with centrifuges that accept 15 mL filter units; please check rotor type, adapter requirements, and maximum RCF for your equipment. Verify the exact SKU and MWCO with the seller prior to ordering if precise part numbering is required.

• Format and volume: 15 mL centrifugal ultrafiltration unit for concentration and buffer exchange of biological samples; seller offer includes 2 units
• Membrane and cutoff: Ultracel-style membrane with 3 kDa molecular weight cut-off (3 kDa MWCO) for retaining proteins/peptides above 3 kDa while allowing smaller solutes to pass
• Centrifuge compatibility: Designed for use in standard swinging-bucket and compatible fixed-angle rotors that accept 15 mL filtration units; verify rotor capacity and maximum RCF before use
• Ease of use: Straightforward spin-and-recover workflow with pipette-accessible concentrate region and graduated 15 mL markings for sample monitoring
• Application range: Suitable for concentrating and desalting biological samples including small proteins, peptides, and other macromolecules in research and laboratory settings