What Is a Micropipette? Types, Uses and How to Choose the Right One

A micropipette is one of the most essential instruments in any laboratory that works with small liquid volumes. Used to measure and transfer volumes in the microlitre (µL) range, micropipettes are a core part of daily work in chemistry, microbiology, molecular biology, cell culture, immunology and diagnostics. Choosing the wrong type can cost accuracy, reproducibility and time, so understanding how micropipettes work and which type suits your application matters more than most people realise.

This guide covers what a micropipette is, its main components, how micropipettes are classified, typical volume ranges, and how to choose the right one for your lab. For a broader look at pipettes generally, see our Pipette Guide and Understanding Pipettes.

What Is a Micropipette?

A micropipette is a precision liquid-handling instrument designed to aspirate and dispense small, accurate volumes of liquid, typically in the microlitre range. Unlike a standard pipette used for larger volumes, a micropipette relies on a calibrated piston mechanism to achieve the accuracy needed for analytical and research work.

Key Features of a Micropipette:

• Plunger – The topmost control, pressed down to expel liquid and released to draw liquid up into the tip. Most micropipettes use two stop positions on the plunger for aspirating and dispensing.
• Volume adjustment dial – Rotates to increase or decrease the set volume within the pipette's rated range.
• Volume display window – Shows the currently set volume so it can be checked before use.
• Tip ejector button – Releases the used tip without the operator touching it, reducing contamination risk.
• Pipette barrel – Houses the internal air chamber and tip cone, and connects the plunger mechanism to the disposable tip.
• Disposable tips – Attach to the barrel to draw in and transfer liquid; different tip sizes suit different volume ranges.

Micropipette Volume Ranges and Tip Colours

Micropipettes are generally identified by their maximum volume, and tip sizes are commonly colour-coded to help avoid mismatched tips during use. Always confirm the exact volume range and compatible tip against the manufacturer's specification, as conventions can vary slightly between brands.

Types of Micropipette

Classification by Working Principle

Air Displacement Micropipettes
The most common type. A piston moves inside a sealed air chamber to create a vacuum that draws liquid into a disposable tip. The piston never contacts the sample, which keeps the internal mechanism clean between uses. This design suits most routine aqueous solutions.

Positive Displacement Micropipettes
Here the piston sits directly inside the tip, in direct contact with the sample, similar to a small syringe. This design is better suited to viscous, volatile or dense liquids where air displacement models can lose accuracy.

Classification by Operating Mechanism

Mechanical (Manual) Micropipettes
Operated by hand using a spring-loaded piston. These remain the standard choice in most labs due to their simplicity, low cost and ease of maintenance.

Electronic (Digital) Micropipettes
Motor-driven pipettes that use button controls rather than manual plunger pressure. Many models allow programmable, repeatable dispensing sequences, which reduces repetitive strain and improves consistency across long runs of samples.

Classification by Number of Channels

Single-Channel Micropipettes
Aspirate and dispense from a single tip, suited to general laboratory work in microbiology, molecular biology and analytical chemistry.

Multichannel Micropipettes
Fitted with multiple tips, commonly 8, 12 or 16, dispensing the same volume simultaneously across a row or column of a microplate. Multichannel models are widely used in ELISA testing and high-throughput molecular screening, where they significantly cut down handling time.

Classification by Volume Capacity

Fixed-Volume Micropipettes
Dispense a single, non-adjustable volume, useful where the same volume is repeated many times and adjustment isn't required.

Variable-Volume Micropipettes
Adjustable within a set range, offering flexibility across a variety of protocols without needing a separate pipette for every volume.

Where Micropipettes Are Used

• Pharmaceutical research and quality control
• Clinical, diagnostic and pathology testing
• Food and beverage testing
• Environmental monitoring and water analysis
• University and TAFE teaching laboratories
• Life sciences, including genomics and molecular biology

How to Choose the Right Micropipette

Start with the volume range your protocols call for, then decide between manual and electronic control based on sample throughput and repetitive workload. Labs handling large batches of plate-based assays generally benefit from a multichannel model, while single-channel pipettes remain the standard for general bench work. If you are working with viscous or volatile liquids, a positive displacement model will hold accuracy better than a standard air displacement pipette.

It's also worth checking tip compatibility and calibration support before ordering, since accuracy depends as much on tip fit and regular calibration as on the pipette itself.

Trusted Micropipette Brands at LabFriend

LabFriend stocks micropipettes and compatible tips from established laboratory brands. GILSON is widely recognised for precision liquid handling and its PIPETMAN range, while BRAND, LLG Labware and Thermo Scientific offer dependable options across manual and electronic formats. Browse GILSON pipette tips such as the GILSON Pipette Tips DL 10 Easypack, 10 µL and the GILSON Pipet Tips DL 10 Tipack, 0.1 to 20 µL for compatible consumables.

Explore the full Laboratory Micropipettes range to compare models by volume range, channel count and control type.

Frequently Asked Questions

What is the difference between a micropipette and a pipette?
A micropipette is a type of pipette designed specifically for microlitre-range volumes, using a calibrated piston mechanism for precision. Larger volume transfers are typically handled with standard pipettes or graduated pipettes instead.

What is the difference between air displacement and positive displacement micropipettes?
Air displacement pipettes use a sealed air cushion between the piston and the sample, suiting most aqueous liquids. Positive displacement pipettes have the piston in direct contact with the sample inside the tip, making them better suited to viscous or volatile liquids.

How often should a micropipette be calibrated?
Most laboratories calibrate micropipettes every three to twelve months depending on usage frequency and the requirements of their quality system, though heavily used pipettes may need more frequent checks.

What is a multichannel micropipette used for?
Multichannel micropipettes dispense the same volume across several tips at once, commonly used with 96-well microplates in ELISA testing and molecular screening to speed up repetitive pipetting.

Explore Micropipettes at LabFriend

Whether you need a single-channel manual micropipette for routine bench work or a multichannel electronic model for high-throughput plate work, LabFriend Australia stocks a wide range of micropipettes and compatible tips from trusted brands. Browse the full Laboratory Micropipettes range to find the right model for your lab.