Corning 4489 Serological Pipette 25 ml Stripette Total of 240 Pipettes

Corning Costar 25 ml Stripette Serological Pipette (4489)

The Corning Costar 4489 is a high-performance 25 ml serological pipette designed for precision liquid handling in sterile laboratory environments. Manufactured from high-clarity, medical-grade virgin polystyrene, these Stripettes feature a specialized paper/plastic individual wrap designed for easy "peel-open" or "pop-through" access, significantly reducing the risk of contamination during aseptic transfers. The 4489 is engineered with bidirectional graduations and a high-capacity overfill scale, providing researchers with exceptional flexibility for both aspirating and dispensing large volumes. Certified non-pyrogenic and delivered sterile, this pipette is an essential tool for large-scale cell culture media preparation, reagent distribution, and general microbiology workflows.

Technical Performance and Design

• Enhanced Graduation Visibility: Features high-contrast black ink graduations that are easy to read. The bidirectional scale includes both ascending and descending numbers to simplify volume tracking.

• High-Capacity Negative Graduations: Engineered with extra negative graduation space, allowing for the transfer of volumes beyond the nominal 25 ml capacity (up to 35 ml total volume).

• Color-Coded Magnifier Stripe: Equipped with a red color-coded stripe (standard for 25 ml) that acts as a magnifier, making it easier to see the meniscus for more accurate volume readings.

• Premium Filter Plug: Features a high-quality bonded-fiber filter plug that protects the pipette controller from over-aspiration and prevents cross-contamination of the sample.

Product Specifications

• Catalog Number: 4489

• Capacity: 25 ml

• Graduation Intervals: 0.2 ml

• Negative Graduations: 10.0 ml (Total working volume up to 35 ml)

• Material: High-Clarity Polystyrene (PS)

• Color Code: Red (Industry standard for 25 ml)

• Sterility: Sterile (Gamma Irradiated to SAL 10^-3 or better).

• Purity: Certified Non-Pyrogenic, Non-Cytotoxic, and DNase/RNase Free.

Key Benefits & Applications

• Large-Scale Media Prep: The 25 ml capacity is ideal for the rapid distribution of basal media, FBS, and antibiotics into T-75 or T-175 flasks.

• Bioprocessing Workflows: Designed to meet the rigorous standards of cleanroom and biosafety cabinet use, providing a reliable tool for vaccine and protein production.

• Consistent Accuracy: Calibrated to deliver (TD) at 20°C with an accuracy of +/- 2% at full volume, ensuring reproducible results across different laboratory operators.

• Simplified Aseptic Handling: The individual paper/plastic wrap is designed to be static-free, preventing the wrap from sticking to gloves or equipment in the hood.

All product names, logos, and brands are property of their respective owners.