Automated Liquid Handling System

What is the Automated Liquid Handling System?

An automated liquid handling system pipettes precise volumes into plates and tubes with programmable channels. It is the core building block of assay automation, used for serial dilution, reagent addition and plate replication.

Overview

An automated liquid handling system uses motorized pipetting channels or a multichannel head to aspirate and dispense liquid on a defined deck. Air-displacement pipettes with disposable tips suit many reagents and avoid carry-over, while positive-displacement or fixed steel probes handle viscous or volatile liquids and can be washed between steps. Liquid-level detection, tip touch and mixing parameters define accuracy at small volumes, and deck positions hold plates, tube racks, reservoirs and tip boxes. Method editors let users build protocols with loops, variables and conditional steps, and some systems read barcodes and interfaces with readers or thermal cyclers. Volume ranges from fractions of a microlitre to millilitres, and channel counts from single to 384. Correct labware definitions, calibration and regular maintenance determine whether precision holds over long runs.

How does it work?

Biotech automation systems replace manual handling with mechanical motion controlled by software. A liquid handler aspirates and dispenses precise volumes with air-displacement or positive-displacement pipettes, using disposable tips or fixed probes washed between steps. Robotic arms or grippers move microplates, tube racks and labware between modules, while sensors and teach points define positions. Scheduling software, sometimes called a scheduler or method editor, coordinates the modules, resolves resource conflicts and tracks each plate and sample. Detection modules add readers, imagers or thermal cyclers so that assays run without manual transfer. Air-displacement pipetting, tip-touch, liquid-level detection and calibrated pumps determine accuracy and precision, while deck design, labware definitions and error recovery determine reliability during long unattended runs.

What are the key features?

• Programmable pipetting channels with disposable or fixed tips
• Liquid-level detection and tip-touch control
• Deck positions for plates, reservoirs and tip boxes
• Method editor with loops and variables
• Barcode reading and reader integration

What are the technical specifications?

A typical automated liquid handling system configuration offers channels of 1–384 channels (model dependent), volume range of 0.5–1,000 µL, accuracy of ±2–5% at low volumes (verified per method), precision of CV below 3% (volume dependent), pipetting principle of Air displacement or positive displacement and deck capacity of 6–30 plate positions. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Automated Liquid Handling System is used in serial dilution and plate preparation, reagent addition for assays, PCR and qPCR setup and sample normalization and pooling. Across the wider Biotech Automation class, laboratories also deploy it for high-throughput screening, genomics and molecular biology workflows and cell line development and clone screening.

Which standards and certifications apply?

Relevant standards and methods include ISO 9001, ISO 13485, 21 CFR Part 11, EU GMP Annex 11, ISO 15189, IEC 61010-1 and ANSI/SLAS microplate standards. Certification candidates for this model are CE, ISO 9001 manufacturing and 21 CFR Part 11 software documentation; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Qualify the system against your methods with accuracy and precision studies at the volumes used, and repeat them after major service. Keep labware definitions current, because a changed plate height or well geometry causes collisions or poor pipetting. Train operators in method editing, teach-point adjustment and error recovery, and restrict who can change methods. Monitor tip and consumable supply, and clean probes, grippers and optics on schedule. For regulated workflows, control software and method versions, review audit trails and confirm that barcodes and results transfer correctly to the laboratory information system. Confirm that the installation meets the manufacturer's requirements for bench stability, power and, where relevant, ventilation and IEC 61010-1.

How do I select the right Automated Liquid Handling System?

Choose a liquid handler from the volumes, channel count and deck area your assays need. In an RFQ specify volume range, accuracy and precision at low volumes, tip type, deck positions, detection and mixing options, software features and the labware you intend to use.

How does it compare with other Biotech Automation variants?

Begin with the workflow you want to automate and the number of samples per day. Choose pipetting channels and volume range from the assay, and confirm accuracy and precision at the low volumes you actually use. For plate movement, define the number of plates in play and the storage and incubation needs, and decide whether a standalone liquid handler, a plate robot or a full workcell is required. For screening, confirm detection compatibility and the ability to run kinetic assays. For colony picking, check the target size, sterility and picking throughput. Across the category, evaluate deck capacity, labware support, scheduling flexibility, integration with readers and incubators, error handling, barcode tracking and the software traceability and validation you need.