Automated Agarose Gel Electrophoresis System

What is the Automated Agarose Gel Electrophoresis System?

An automated agarose gel system loads, runs, stains and images up to 96 samples per gel without casting or manual handling, giving low-cost batch sizing of PCR products and digests. It is the economical option where approximate sizing is sufficient.

Overview

The system replaces manual gel casting with a prefilled or automated gel cassette, a robotic or multichannel loading mechanism and integrated imaging. Samples are loaded from a 96-well plate, voltage is applied for a preset time, and the gel is stained and photographed automatically; the software detects bands and estimates size against a ladder. Typical resolution is 20–50 bp differences in the 100–2,000 bp range, which is adequate for checking PCR success, confirming restriction patterns and detecting plasmid isoforms, but not for library sizing. Consumable cost per sample is low and throughput is high, with run and analysis time of about 20–60 minutes per gel. Because staining and destaining are contained, operator exposure to dyes such as ethidium bromide or gel red is reduced.

How does it work?

Fragment analysis separates charged nucleic acid fragments in a sieving matrix and detects them by fluorescence. In capillary systems, samples are injected electrokinetically into a polymer-filled capillary, where smaller fragments migrate faster and reach the detector earlier. A laser excites intercalating dye bound to the DNA or RNA, and the software converts migration times into fragment sizes using an internal ladder and into concentrations using a quantitative marker. Microfluidic chips work on the same principle with shorter separation channels and smaller volumes. Automated agarose gel instruments draw samples through a gel by voltage and image the bands after staining. Because the sizing algorithm depends on the ladder and the polymer lot, run quality flags such as marker height and baseline noise should be reviewed before results are accepted.

What are the key features?

• Automated loading, electrophoresis, staining and imaging
• Handles up to 96 samples per gel in one run
• Software band detection with size estimation against a ladder
• Contained staining reduces operator dye exposure
• Run and analysis completed in about 20–60 minutes
• Low consumable cost per sample for routine checks

What are the technical specifications?

A typical automated agarose gel electrophoresis system configuration offers samples per gel of up to 96, sizing range of approx. 100 bp–10 kb, resolution of approx. 20–50 bp at 100–2,000 bp, run time of approx. 20–60 min including imaging, sample volume of 5–20 µL per well and gel format of Prefilled agarose cassette, single use. 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 Agarose Gel Electrophoresis System is used in routine PCR success checking, restriction digest and cloning verification, plasmid preparation quality assessment and teaching and high-volume screening laboratories. Across the wider Fragment Analyzers class, laboratories also deploy it for next-generation sequencing library quality control, RNA integrity assessment before expression studies and PCR amplicon and restriction digest checks.

Which standards and certifications apply?

Relevant standards and methods include ISO 20395, ISO 22174, CLSI MM09, IEC 61010-1 and ISO 15189. Certification candidates for this model are CE, ISO 9001 manufacturing and IEC 61010-1 safety; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Install the analyzer on a level bench away from vibration and direct sunlight, because optical alignment and polymer flow are sensitive to movement. Store polymer, ladders and dye kits within their stated temperature range and note lot numbers, since a ladder or polymer change can shift sizing by several percent. Run a ladder and a known control with each batch, and review quality flags before releasing data. Replace polymer and clean electrodes as instructed to prevent carry-over between samples. Keep the instrument in a room with stable temperature to limit baseline drift, and include the analyzer in the laboratory's pipette and instrument calibration schedule. Verify performance after any service or software upgrade.

How do I select the right Automated Agarose Gel Electrophoresis System?

Select an automated gel system when sample numbers are high, sizing needs are approximate and consumable cost matters. Specify sample capacity, sizing range and resolution, gel cassette type, staining chemistry, imaging resolution and whether band tables export to your record system.

How does it compare with other Fragment Analyzers variants?

Choose by the sample type, resolution and throughput you need. Capillary systems give the best sizing accuracy and reproducibility, which matters for sequencing libraries and RNA integrity scoring. Microfluidic chip systems run more samples in less time with microlitre volumes but give approximate sizing. Automated gel systems handle many samples at low consumable cost with lower resolution. Check the sizing range against your fragments: amplicons of 100–1,000 bp behave differently from long-read libraries above 20 kb, and high-sensitivity kits are needed below 1 ng/µL. Confirm sample volume, consumable cost, run time, and whether the software exports results to a laboratory information system. Where quantification must be exact, pair the analyzer with a fluorometric or digital PCR method.