Sarstedt Centrifuge Tube 0.5 ml Pack with 500 Tubes

Sarstedt Screw Cap Micro Tube – 0.5 mL Capacity, Skirted Conical Base with External Knurling, High-Performance Polypropylene, 20,000 x g RCF Rating (MPN: 72.730 Series)

The Sarstedt 72.730 model family is an instrument-grade, high-performance microcentrifuge and sample management tube system engineered for the secure processing, long-term cryo-archiving, and clinical centrifugation of low-volume biological specimens. Designed with a 0.5 mL (500 µL) working volume capacity, these tubes are injection-molded from high-purity, ultra-clear polypropylene (PP). The structural layout is distinguished by a skirted conical base that provides standalone stability on benchtops, paired with vertical external knurling (ribs) that lock directly into specialized laboratory workstation racks for efficient, one-handed cap manipulation. Rated to withstand extreme centrifugal forces up to 20,000 x g, these tubes utilize a secure screw cap closure embedded with an Ethylene Propylene Diene Rubber (EPDM) O-ring, delivering a certified vapor-tight and leakproof seal that eliminates the risk of sample evaporation or cross-contamination during intensive fluidic loops.

Technical Performance and Design

• 20,000 x g Heavy Centrifugation Rating: Structurally validated to withstand high-velocity g-forces in standard microcentrifuges. The robust polypropylene casing maintains dimensional integrity without fracturing or deforming under extreme stress.

• Hermetic EPDM O-Ring Sealing: Outfitted with a premium screw cap configuration backed by an internal EPDM rubber O-ring gasket. This design ensures an absolute fluid-tight barrier that prevents micro-leakage and sample blow-by during volatile headspace changes or sub-zero storage transformations.

• Interlocking Knurled Skirted Base: Features an integrated, flat-bottomed outer skirt that allows the tube to stand upright on any flat work surface. The external knurling grooves align with matching slots in automated laboratory racks, facilitating smooth, single-handed opening and closing.

• Broad Thermal Containment Horizon: The high-purity polymer formulation remains stable and pliable under extreme temperature shifts, making it excellent for vapor-phase liquid nitrogen storage, deep-freeze archiving down to -90°C, and routine laboratory autoclaving cycles.

Product Specifications

• Catalog Reference / Model Family: 72.730 Series (Includes base variations like .003, .005, .006, .007, .100, .105, and .306)

• Manufacturer / Brand: Sarstedt AG & Co. KG (Country of Origin: Germany)

• Nominal Processing Capacity: 0.5 mL (500 microliters) working volume

• Physical Structural Profile: Length: 44 mm; External Tube Diameter: 10.8 mm

• Base Geometry Profile: Skirted Conical Base with integrated anti-rotation knurling

• Material Composition: Pure Medical-Grade Polypropylene (PP) tube core; Polypropylene cap; EPDM O-ring gasket

• Maximum Centrifugal Velocity: 20,000 x g Relative Centrifugal Force (RCF)

• Regulatory & Industry Standards: IVDR compliant (In-Vitro Diagnostics Directive), IATA certified for air transit compliance, and batched for absolute tracking consistency

Key Benefits and Applications

• Clinical Sample Biobanking: The industry-preferred choice for core blood banks, forensic centers, and pathology labs to securely archive high-value master fractions, DNA/RNA templates, and raw patient serum aliquots.

• High-Sensitivity PCR Sample Preparation: Keeps low-volume master mixes or extracted nucleic acid samples isolated from ambient air currents, protecting delicate enzymatic reagents from evaporation losses.

• One-Handed Pipetting Workflows: Perfect for busy molecular diagnostics labs and cleanrooms where technicians need to safely open, dose, and reseal vials while maintaining a sterile hold on their pipettor.

• Excellent Chemical Compatibility: Polypropylene construction offers strong structural resistance against aggressive laboratory reagents, dimethyl sulfoxide (DMSO), and common organic solvent extraction matrices.

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