Molecular BioProducts Pipette Tips 300 ul 4 Racks with 96 Tips Each

Thermo Scientific ART SoftFit-L Pipette Tips – 300 µL, Filtered, Sterile, Hinged Rack

The Thermo Scientific 3731-HR (originally under the Molecular BioProducts / MBP brand) is a premium 300 µL sterile pipette tip engineered specifically for seamless compatibility with Rainin LTS (LiteTouch System) pipettes. Molded from 100% virgin, bio-inert polypropylene, these tips feature a specialized SoftFit-L design that ensures an airtight, consistent seal with minimal mounting and ejection force, drastically reducing user hand fatigue. Enclosed in heavy-duty hinged racks that protect against benchtop airborne contaminants, these tips incorporate the proprietary ART (Aerosol Resistant Tip) self-sealing barrier. Certified completely free of RNase, DNase, DNA, and pyrogens, they deliver the absolute volume accuracy and cross-contamination protection required for high-sensitivity molecular assays.

Technical Performance and Design

• Rainin LTS System Architecture: Precision-engineered to match the unique cylindrical nozzle and thin-rim retention ring specifications of Rainin LTS pipettes, guaranteeing straight vertical tip alignments and perfect tip-to-tip uniformity on multichannel models.

• ART Self-Sealing Barrier: Unlike standard porous filters that merely slow down aerosol entry, the internal ART barrier allows clean air to pass freely during normal aspiration, but completely locks and traps liquids or harmful aerosols if an accidental over-pipetting event occurs.

• Rigid Hinged Rack Layout: Supplied in a robust, color-coded yellow hinged rack that holds the individual tips perfectly vertical, preventing tip deflection when multi-channel pipettor heads snap into place. The interlocking lid can be effortlessly flipped back using a single thumb.

• Bio-Inert Pure Polymer: Manufactured strictly without slip agents, plasticizers, or heavy metals, protecting biological sample matrices from chemical leaching that could alter enzymatic reactions or skew spectrophotometric data.

Product Specifications

• Catalog Number / MPN: 3731-HR (also written as 3731HR)

• Product Line: ART SoftFit-L

• Volume Capacity: 300 µL

• Tip Style: SoftFit-L (Compatible with Rainin LTS pipettes)

• Rack Format: 96 Tips per Rack

• Material: Pure Virgin Polypropylene

• Sterility: Gamma Irradiated Sterile, Non-Pyrogenic, RNase/DNase-Free, and Endotoxin-Safe

Key Benefits & Applications

• Ergonomic Stress Reduction: The SoftFit design pairs with the LTS line to drop tip-installation forces by up to 70%, protecting laboratory technicians from Repetitive Strain Injuries (RSI) during long sample compounding shifts.

• Radioactive & Infectious Handling: The self-sealing ART filter matrix forms a permanent block against aerosol breakthrough, making it the safest option for processing radioactive isotopes, dangerous viral lines, or volatile solvents.

• PCR & Next-Gen Sequencing (NGS): Arrives cleanroom-certified "PCR Ready," making it an exceptional vessel for assembling delicate genomic master mixes, RNA isolation protocols, and forensic sample testing.

• Eco-Friendly Compatibility: The empty structural racks are designed to accept standard Thermo Scientific SoftFit-L reload towers once spent, enabling effortless plastic waste reduction setups.

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