Handling "difficult" liquids like high-viscosity oils, volatile solvents, or foaming reagents requires specialized engineering beyond standard air-displacement tools. Professional laboratory positive displacement pipettes use a direct-contact piston system to eliminate the air cushion, ensuring absolute volumetric accuracy regardless of physical sample properties. As a specialized segment of our liquid handling ecosystem, these instruments solve the complex dosing challenges found in our pipettes range, delivering reliability for demanding analytical workflows.
Why Choose Positive Displacement Pipettes?
Our curated collection of high-performance pipettors is designed for technical precision with non-aqueous samples:
- Specialized for Microbiology: We stock the GILSON Microman M series, including the M10E (1-10 µL), M50E (20-50 µL), and M1000E (100-1000 µL), specifically engineered for contaminated or viscous samples.
- Macro-Volume Precision: Utilize the BRAND Macro Transferpettor Digital for larger volumes, featuring color-coded models for ranges like 100-500 µL (Green), 200-1000 µL (Yellow), and 2000-10000 µL (Orange).
- Viscosity Independence: Explore the GILSON Microman M25E (3-25 µL) for directly displacing liquids that would otherwise cling to the walls of standard tips.
- Volatile Liquid Security: Eliminate errors caused by evaporation or pressure changes in the air cushion when handling solvents like acetone or hexane.
LabFriend supplies positive displacement pipettes from the world's leading manufacturers in precision dosing:
- GILSON: The industry standard for this technology, offering the legendary Microman series for absolute accuracy with "problem" liquids.
- BRAND: Global specialist in high-precision volumetric hardware, featuring the Transferpettor Digital series for robust macro-volume handling.
- Socorex: Renowned Swiss manufacturer providing durable positive displacement solutions for diverse laboratory applications.
Accurate handling of complex fluids is the foundation of high-integrity data; to further enhance your laboratory system, we recommend exploring these related categories:
- Microlitre Pipettes: Use Eppendorf Reference 2 G or LLG pipettors for standard aqueous solutions where air displacement is suitable.
- Pipette Accessories: Utilize SOCOREX Universal Stands or LLG Racks to safely store your precision displacement tools.
- Hand Dispensers: Explore BRAND HandyStep S or Eppendorf CombiTips for rapid, repetitive dispensing of reagents.
- Bottletop Dispensers: Use BRAND Dispensette S systems for direct and safe dispensing of bulk chemicals and solvents.
Unsure if your viscous protocol requires a GILSON Microman or a BRAND Transferpettor? Our team provides local technical support to help you find the correct displacement solution with fast shipping and competitive pricing.
Frequently Asked Questions
1. How does a positive displacement pipette differ from a standard pipette?
Unlike standard air-displacement pipettes that use an air cushion, positive displacement models use a piston that comes into direct contact with the liquid, ensuring that the volume dispensed is unaffected by the liquid's density or viscosity.
2. When should I use a GILSON Microman instead of a regular pipettor?
The Microman is essential when working with viscous liquids (like glycerol), volatile solvents (like ethanol), or samples where aerosol contamination must be completely eliminated.
3. Are the tips for these pipettes the same as standard pipette tips?
No, positive displacement pipettes require specialized capillary/piston sets that are designed to fit the specific mechanical linkage of the pipettor.
4. Can I use these for macro-volume transfers?
Yes, the BRAND Transferpettor Digital series is specifically designed for high-accuracy transfers of large volumes, with capacities reaching up to 10 mL.
