Cole-Parmer Freezer Rack for Deep Well Microplates 24 Place with Locking Pins

Cole-Parmer Upright Stainless Steel Freezer Rack for Deep-Well Microplates – 24-Plate Capacity, Dual Locking Rods, Corrosion-Resistant Frame (MPN: UX-04400-49)

The Cole-Parmer UX-04400-49 (also cataloged as EW-04400-49 or 04400-49) is a commercial-grade, heavy-gauge stainless steel freezer rack specifically designed to maximize vertical storage density for deep-well microplates and tall utility blocks within laboratory upright freezers. Constructed with a 4-tier by 6-column bay matrix, this rack holds up to 24 standard deep-well 96-well or 384-well microplates (or tall profile storage boxes). To protect valuable biological samples during rack handling or freezer transfer, the assembly includes dual stainless steel locking pins/rods that slide across the front face, securing plates within their individual shelf slots. Built from corrosion-resistant, passivated stainless steel, it withstands repeated ultra-low temperature (ULT) thermal cycling down to -80 C without warping, rusting, or degradation.

Technical Performance and Structural Design

• Corrosion-Resistant Stainless Steel Frame: Precision-welded from high-tensile passivated stainless steel to prevent rust, chemical degradation, and structural fatigue during long-term placement in -20 C and -80 C ultra-low temperature environments.

• Dual Safety Locking Rod Mechanism: Features front-access vertical locking pins that slide through pre-drilled channel loops along the rack face. This physical barrier prevents deep-well plates from sliding out accidentally when pulling the rack from frozen shelves.

• Optimized Vertical Storage Density: Engineered specifically for the taller profile of deep-well microplates, providing clean clearance per shelf tier to avoid plate binding and stack jamming during retrieval.

• Ergonomic Pull Handle: Outfitted with a sturdy front-mounted handle, allowing laboratory personnel wearing thick cryogenic safety gloves to easily slide the entire assembly out of frost-covered freezer compartments.

Product Specifications

• Catalog Number / MPN: UX-04400-49 (Cross-listed as EW-04400-49 / 04400-49)

• Manufacturer / Brand: Cole-Parmer

• Holding Capacity Parameters: Holds up to 24 Deep-Well Microplates (configured in a 4-tier high x 6-column deep array)

• Physical Exterior Dimensions: 22.75 inches Length x 5.5 inches Width x 10 inches Height (57.8 cm L x 14 cm W x 25.4 cm H)

• Material Composition: Passivated Industrial Stainless Steel

• Included Safety Hardware: Stainless steel vertical locking pins / retention rods

• Temperature Operating Range: Suitable for standard freezers (-20 C) and Ultra-Low Temperature (ULT) freezers (-80 C)

Freezer Compatibility and Dimensions Guide

The 22.75" L x 5.5" W x 10" H footprint of the UX-04400-49 is designed for standard upright ultra-low temperature (-80 C) and laboratory freezers. To ensure a proper fit, verify your interior compartment dimensions against the rack's physical bounds:

• Upright ULT Freezers (-80 C): Compatible with standard 19 to 28 cu. ft. upright laboratory freezers (such as Thermo Scientific Revco/Forma, Eppendorf/New Brunswick, Panasonic/PHCbi, and So-Low) featuring shelf depths of at least 23 inches and shelf compartment heights exceeding 10.25 inches.

• Measurement Check: Ensure your freezer inner compartment depth (from back wall to inner door panel) is at least 23 inches, and clear shelf height is at least 10.25 inches to allow smooth clearance when pulling the rack by its handle.

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