100 microliter
Overview
The 100μL micropipette is a fundamental tool in laboratories requiring precise liquid measurements. Designed for volumes between 10-100μL, it minimizes human error in repetitive tasks like reagent dispensing or sample aliquoting. Its accuracy (±1-3%) makes it indispensable in life sciences and diagnostics. Modern variants feature adjustable volume settings, digital displays (for electronic models), and lightweight materials to reduce user fatigue. Compliance with ISO 8655 standards ensures reliability across research and industrial applications.
Structure and Working Principle
A 100μL micropipette consists of a plunger, volume adjustment dial, tip ejector, and disposable polypropylene tips. The air displacement mechanism creates a vacuum to aspirate liquid, with accuracy dependent on proper tip sealing and user technique. Internal components include a stainless-steel piston and spring, while the body uses chemically resistant plastics. Electronic models replace manual plungers with motorized controls for enhanced reproducibility in high-throughput workflows.
Key Features
Ergonomics are prioritized with contoured grips and low plunger forces (e.g., 3N) to prevent repetitive strain. Many models offer quick-release tip ejectors and autoclavability (121°C) for sterilization. Advanced features include multi-channel designs (for 96-well plates) and Bluetooth-enabled data logging. Calibration locks and color-coded volume ranges (e.g., yellow for 100μL) streamline workflow organization.
Application Areas
Common in molecular biology (DNA/RNA work), clinical diagnostics (serum pipetting), and pharmaceutical QC. Used for PCR master mixes, cell culture media preparation, and serial dilutions. Industrial applications include food safety testing and environmental monitoring. Multi-channel 100μL pipettes are standard in ELISA and high-throughput screening (HTS) labs.
Maintenance and Precautions
Monthly calibration is recommended using gravimetric methods. Lubricate pistons annually with manufacturer-approved grease. Avoid prolonged exposure to UV or corrosive vapors. Always pre-wet tips for volatile liquids and maintain vertical pipetting angles. Store pipettes upright when not in use. Contamination risks are reduced by using filter tips for sensitive assays.
B2B Procurement Guide
For bulk purchases (10+ units), negotiate service contracts including free calibration and spare parts. Verify supplier certifications (ISO 17025 for calibration labs). Consider total cost of ownership: manual pipettes cost less upfront but electronic models reduce training time. OEM tip compatibility can significantly impact long-term expenses. Request material certificates for regulatory compliance (e.g., FDA 21 CFR Part 11 for electronic models).
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