The micropipette finnpipette f2 singlechannel variable volume 055 l is a precision liquid handling tool designed for small-volume workflows in research and quality control labs. Engineered for the 0.5 to 5 µL range, it combines robust mechanical performance with user-focused adjustments to minimize user variability.
Its spring-loaded single-channel operation and low-retraction-force piston ensure consistent accuracy across repetitive transfers, supporting sensitive assays and high-throughput screening. Below is a quick-reference specification table to compare core performance at a glance.
| Model | Volume Range | Accuracy (±%) | Repeatability (±%) | Max Travel Force (N) |
|---|---|---|---|---|
| Finnpipette F2 055 L | 0.5–5 µL | 1.0 (typical) | 0.3 (typical) | 8 |
| Calibration Volume | 1 µL, 2 µL, 5 µL | — | — | — |
| Tip Compatibility | Standard low-retip | — | — | — |
| Sterility | {"Head": "Yes", "Body": "Pre-sterile, RNase/DNase-free", "Cytokine-tested": "Yes", "Endotoxin-controlled": "<0.01 EU/µL"}||||
| Operating Temperature | 15–25 °C | Storage Temperature | 2–25 °C |
Operating Principle Of The Finnpipette F2 Singlechannel
The finnpipette f2 singlechannel variable volume 055 l uses a balanced piston mechanism that converts vertical movement into axial liquid displacement. This design reduces side loads on the pipette shaft, promoting smoother tip ejection and minimizing aerosol release during forceful ejection strokes.
By maintaining consistent friction across the full stroke, the system supports linear volume adjustment from 0.5 µL to 5 µL with minimal hysteresis. Users benefit from reliable settings retention when switching between calibrated volumes during multi-plate runs.
Calibration And Verification Protocols
Routine calibration using gravimetric methods with certified solvent density correction helps sustain claimed accuracy figures. Establish a schedule that aligns with your lab’s throughput and regulatory expectations, documenting each check with environmental conditions.
Verification should include lower and upper volume points within the 055 L range to detect potential performance drift. Corrective action logs tied to specific pipette identifiers simplify traceability during audits and support predictive maintenance strategies.
Best Practices For Pipetting Technique
Consistent technique is as important as instrument quality when targeting low µL accuracy. Position the pipette vertically, immerse the tip to the recommended depth, and avoid tilting to prevent asymmetric liquid entry.
Slow pre-wetting, controlled immersion, and steady tip ejection reduce meniscus-related variability. For volatile or viscous liquids, confirm that your protocols account for potential differences in meniscus formation and drainage characteristics.
Maintenance And Storage Recommendations
Daily cleaning with compatible wipes on the outer sleeve and shaft prevents residue buildup that could affect piston motion. Avoid harsh solvents that may degrade seals, and verify that tip ejector performance remains smooth after repeated use.
Long-term storage in a low-humidity environment with appropriate tip-mounted protection minimizes contamination risk and preserves piston lubrication. Label storage containers clearly with last service dates and operating conditions to streamline retrieval and pre-use checks.
Key Takeaways For Implementation
- Confirm compatibility with your tip brand and lot traceability requirements.
- Schedule recurring calibration checks aligned with throughput and regulatory guidance.
- Document environmental conditions during calibration and verification cycles.
- Train operators on vertical pipetting posture and consistent immersion depth.
- Plan maintenance intervals based on usage frequency and observed performance.
FAQ
Reader questions
How does the spring-loaded piston affect accuracy at the lower end of the 0.5–5 µL range?
The spring-loaded piston provides consistent return force, reducing user-dependent variability and helping maintain target accuracy from 0.5 µL upward.
Can this pipette be used in automated platforms or with robotic liquid handlers?
Yes, its standard interface and balanced stroke profile support integration into many automated workflows, but verify physical clearance and cycle timing with your system configuration.
What are the consequences of using non-sterile or incompatible tips with the finnpipette f2 singlechannel 055 l?
Non-sterile or incompatible tips can introduce variability, contamination, or retention issues that compromise accuracy and sterility requirements for sensitive applications. Under routine conditions, inspect the seal and piston assembly at least quarterly or sooner if you notice performance drift, unusual resistance, or inconsistent ejection behavior.