Corning Costar Microplate with Lid 96 Well PS Indiv Sealed Case of 50 Plates

Corning Costar 96-Well Round-Bottom Assay Microplates – Non-Treated Virgin Polystyrene, Clear Optically Transparent Geometry, Individually Wrapped, with Lid, Non-Sterile (MPN: 3894)

Expiration: 2028-06-14.

The Corning Life Sciences Costar® 3894 (also cataloged across laboratory distribution networks as CLS3894 or 3894-CS) is a premium, research-grade 96-well microplate engineered for high-performance solution-based assays, sample preparation, dilution series, and cell-free screening applications. Injection-molded from high-clarity virgin polystyrene, this microplate features a round (U-bottom) well geometry that promotes excellent sample mixing, efficient liquid recovery, and complete bead pelleting during centrifugation steps. Designed with a non-treated, hydrophobic polymer surface, the well interior minimizes non-specific binding of hydrophobic molecules, preserving active compound concentrations in solution. Each plate includes a matching clear polystyrene lid with orientation corners and is individually sealed in a protective wrapper to prevent airborne dust contamination prior to use.

Technical Performance and Structural Design

• Hydrophobic Non-Treated Polystyrene Surface: The internal well walls are left untreated, providing a naturally hydrophobic plastic surface. This non-binding environment prevents unwanted surface adhesion of non-polar molecules, ensuring accurate sample concentrations in biochemical and solution-phase screening assays.

• Round (U-Bottom) Well Hydrodynamics: Engineered with a smooth, contoured U-bottom well shape. This geometry optimizes vortex mixing, facilitates complete liquid draw by automated pipetting needles, and improves pellet formation during microplate centrifugation.

• Individually Wrapped Dust Barrier: Supplied individually wrapped to ensure that each plate remains pristine, dust-free, and protected from ambient cleanroom particulates until the exact moment of unboxing.

• Standardized ANSI/SLAS Footprint: Manufactured to precise dimensional tolerances that conform strictly to ANSI/SLAS microplate standards. This guarantees smooth compatibility with automated liquid handlers, plate washers, robotic stackers, and microplate readers.

Product Specifications

• Catalog Number / MPN: 3894 (Cross-listed as CLS3894 / 3894-CS / 3894-EA)

• Manufacturer / Brand: Corning Life Sciences / Costar®

• Plate Format Array: 96-Well Layout (Standard 8 x 12 row/column matrix with molded alphanumeric indexing)

• Well Bottom Profile: Round (U-Bottom)

• Volumetric Capacity Parameters: Total well volume capacity of 330 µL / Recommended working volume: 75 µL to 200 µL

• Material Composition: Ultra-Pure Clear Virgin Polystyrene (PS)

• Surface Treatment Chemistry: Medium Binding / Non-Treated (Untreated hydrophobic surface)

• Lid Profile & Packaging: Includes matching clear polystyrene lid; individually sealed in protective plastic wrapping

• Sterility Metric: Non-Sterile (Validated for general assay prep, high-throughput screening, and compound storage)

Key Benefits and Applications

• High-Throughput Sample Dilution and Storage: The standard choice for serial dilutions, reagent mixing, and short-term sample holding before running analytical chromatographic or reader assays.

• Agglutination and Precipitation Assays: The contoured U-bottom shape allows clear visual observation of cell or particle settling patterns, making it ideal for hemagglutination, blood typing, and immunoprecipitation protocols.

• Automated Liquid Handling Workflows: Rigid outer structural borders ensure reliable performance when handled by robotic arms, plate shakers, and multichannel automated pipettors without mechanical jams.

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