Dual-Tray Multi-Gel Horizontal Electrophoresis System

What is the Dual-Tray Multi-Gel Horizontal Electrophoresis System?

A horizontal tank that runs two or more gel trays in the same buffer chamber, either side by side or stacked, doubling throughput without a second tank or power supply. It fits laboratories running many routine gels per day.

Overview

A dual-tray system accommodates two gel trays in one buffer chamber. In side-by-side designs both gels run simultaneously in separate lanes, while stacked designs place one gel above the other with a shared electrode pair. Standard trays are commonly 10 x 10 or 15 x 15 cm, and each tray can carry its own comb so two different assays can run together. Because both gels share the same electrodes, they receive the same voltage and identical running conditions, which makes the format convenient for comparing samples. Buffer volume is higher than a single mini tank, at about 500–1000 mL, and the power supply must provide the combined current of both gels. Typical users are diagnostic and agricultural laboratories that run dozens of gels per day and want to limit bench space and power-supply count.

How does it work?

In a horizontal system the agarose gel is cast in a tray, placed in a tank and submerged a few millimetres below running buffer, usually TAE or TBE. When voltage is applied between the platinum or stainless-steel electrodes, negatively charged nucleic acids migrate toward the anode through the pores of the agarose. Shorter fragments move faster, so the bands sort by length, and a size ladder allows estimation of fragment size. The buffer carries current and conducts away Joule heat, which is why voltage per centimetre of electrode spacing is limited, typically to 5–10 V/cm. Bands are visualised with intercalating dyes such as ethidium bromide or safer alternatives under UV or blue light. Key components are the tank, gel tray, combs that form wells, electrode leads and a safety lid.

What are the key features?

• Two gel trays share one buffer chamber and one electrode pair for equal run conditions
• Each tray accepts its own comb, so two assays with different well formats can run together
• Side-by-side or stacked layout options fit different bench depths and gel sizes
• Removable tray supports allow one gel to be cast while another is running
• Single lid interlock and one pair of leads simplify connection to the power supply
• Platinum-coated electrodes maintain stable current over repeated multi-gel runs

What are the technical specifications?

A typical dual-tray multi-gel horizontal electrophoresis system configuration offers number of gel trays of 2, gel size per tray of 10 x 10 cm or 15 x 15 cm, buffer volume of 500–1000 mL, maximum voltage of 250 V DC, maximum current of 500 mA and samples per run (both trays) of up to 80. 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 Dual-Tray Multi-Gel Horizontal Electrophoresis System is used in routine diagnostic PCR analysis, parallel assay comparison, agricultural testing laboratories and teaching and training sessions. Across the wider Horizontal Electrophoresis class, laboratories also deploy it for PCR product verification, restriction digest analysis and RNA integrity checking.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61326-1, ISO 17025 and Ph. Eur. 2.2.31. Certification candidates for this model are CE, ISO 9001 manufacturing and RoHS; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the tank on a level, vibration-free bench away from sinks and keep the power supply outside the splash zone. Replace running buffer regularly, because ion depletion and pH drift degrade resolution after repeated runs. Clean tanks with mild detergent and rinse with deionised water; avoid solvents that craze acrylic. Inspect electrodes for corrosion and check that lid interlocks and lead insulation remain intact. Handle ethidium bromide and UV sources under local chemical and optical safety rules, or switch to safer stains. Electrical safety should follow IEC 61010-1. Record voltage, time, gel percentage and buffer batch for traceability, and use ladders appropriate to the fragment range.

How do I select the right Dual-Tray Multi-Gel Horizontal Electrophoresis System?

Select a dual-tray tank when daily gel counts are high and bench or power-supply capacity is limited. Both gels share one set of electrodes, so assays must tolerate the same voltage and buffer. Specify tray size, number of trays, comb set, maximum current and whether a separate casting stand is included.

How does it compare with other Horizontal Electrophoresis variants?

Choose the gel size first, because it fixes run time, sample number and resolution. Mini tanks give fast checks of a few samples, midi and standard formats balance throughput and resolution, and wide-format tanks accommodate multi-channel pipetting for 96-well workflows. Check the maximum voltage and buffer volume, as a larger tank needs a bigger power supply and more buffer. Consider whether dual trays or removable casting systems help speed. Pulsed-field systems are only needed for fragments above roughly 50 kb, such as genomic DNA typing. Also confirm comb thickness and tooth options, electrode material, lid interlock design and chemical resistance of the polycarbonate or acrylic body, and whether replacement trays and combs are easy to source.