Whatman Unifilter Microplate 24 Well 10 ml PP Long Drip Director 5 Plates

Whatman 7700-9904 UNIFILTER Microplate – 24-Well, 10 mL, Polypropylene, Long Drip Director

The Whatman 7700-9904 is an advanced 24-well UNIFILTER microplate engineered specifically for large-volume sample preparation and biomolecule purification. Constructed entirely from premium natural polypropylene, this plate offers exceptional heat stability and broad chemical resistance, making it suitable for aggressive organic synthesis and combinatorial chemistry workflows. Each of the 10 mL wells is equipped with a 25 to 30 µm melt-blown polypropylene (MBPP) depth filter, which excels at clarifying large particulate loads without premature clogging. To ensure absolute sample integrity during downstream collection, the plate features Whatman's patented long drip director geometry. This extends the fluid path securely into the receiving plate, completely preventing aerosolization and well-to-well cross-contamination during vacuum filtration.

Technical Performance and Design

• Melt Blown Polypropylene (MBPP) Membrane: The 25–30 µm depth filter matrix provides an excellent balance of high flow rates and high dirt-holding capacity, ideal for processing viscous matrices or high-solids cellular debris.

• Patented Long Drip Director: The specialized nozzles extend significantly below the filter plane, ensuring that discrete sample streams fall straight into the collection plate without splashing or creeping along the plate bottom.

• Chemical and Heat Resistance: The natural polypropylene housing is highly inert, preventing the leaching of plasticizers and allowing the plate to withstand harsh organic solvents and elevated incubation temperatures.

• High-Volume 10 mL Wells: The massive 10 mL per-well capacity bridges the gap between standard 96-well microplates and individual solid-phase extraction (SPE) columns, significantly increasing high-throughput processing efficiency.

Product Specifications

• Catalog Number: 7700-9904

• Plate Format: 24-Well

• Maximum Volume: 10 mL per well

• Filter Media: 25–30 µm Melt Blown Polypropylene (MBPP)

• Plate Material: Natural Polypropylene

• Drainage Design: Long Drip Director

Key Benefits & Applications

• Solid Phase Extraction (SPE): The industry standard for large-volume, high-throughput SPE, effectively replacing the need for time-consuming manual extraction using individual cartridges.

• Combinatorial Chemistry: Built to survive the aggressive reagents and harsh washing steps required during the automated parallel synthesis of chemical libraries.

• Zero Cross Talk: The long drip directors provide researchers with peace of mind that highly sensitive target molecules will not cross-contaminate adjacent wells during vacuum manifold evacuation.

• Automated Liquid Handling: The plate footprint adheres to standard automation dimensions, making it easily adaptable to robotic liquid handlers and vacuum stations.

All product names, logos, and brands are property of their respective owners.