Globe Scientific Transfer Pipet 6.5 ml Narrow Stem PE Pack of 500 Pipettes

Globe Scientific 139020 Transfer Pipet – 6.5 mL, Narrow Stem, LDPE

The Globe Scientific 139020 is a 6.5 mL disposable transfer pipet featuring a narrow stem geometry, engineered for the precise extraction and dispensing of biological fluids and chemical reagents. Molded from a single piece of custom-grade, low-density polyethylene (LDPE), this non-sterile pipet is chemically inert, non-toxic, and completely unbreakable. The elongated 155 mm profile and flexible stem are specifically designed to easily access narrow-bore vessels, such as spectrophotometer cuvettes and small-diameter test tubes. Capable of drawing 3.2 mL in a single bulb squeeze, it delivers controlled, reproducible drops (28 drops/mL) for exact volumetric aliquoting.

Technical Performance and Design

• Custom-Grade LDPE: The low-density polyethylene provides a non-slippery surface for secure handling with nitrile or latex laboratory gloves, while remaining completely inert to biological fluids and most dilute acids or bases.

• Flexible Narrow Stem: The extended stem tapers to a fine 2.1 mm tip, allowing it to easily bend and maneuver into tight vessels without creating aerosolizing splashes or scratching delicate optical surfaces.

• Thermal Resilience: With an operational temperature range of -50°C to +75°C, the pipet can be safely frozen in liquid nitrogen vapor or heat-sealed at the tip to function as a temporary, leak-proof liquid transport vessel.

• Dispenser Box Packaging: Supplied in a benchtop-friendly dispenser box with a hinged front panel, protecting the non-sterile pipets from ambient lab dust and keeping the workstation strictly organized.

Product Specifications

• Catalog Number: 139020

• Material: Low-Density Polyethylene (LDPE)

• Total Capacity: 6.5 mL

• Bulb Draw Capacity: 3.2 mL

• Total Length: 155 mm

• Drops per mL: 28

• Sterility: Non-Sterile

Key Benefits & Applications

• Spectrophotometry & Cuvettes: The standard choice for transferring reagents directly into delicate spectrophotometer cuvettes without scratching the glass or plastic walls.

• Controlled Dispensing: The uniform drop size enables reliable, repeatable micro-volume additions during pH adjustments, titrations, or colorimetric assays.

• Cryogenic Storage & Transport: The LDPE tip can be hermetically sealed using a standard benchtop impulse heat sealer, allowing researchers to safely store small sample aliquots at ultra-low temperatures.

• Cross-Contamination Prevention: Designed strictly for single use, the affordable plastic construction eliminates the need for washing fragile glass Pasteur pipets and completely removes the risk of biological or chemical carryover.

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