Double-Orbital Microplate Shaker for 384-Well Plates

What is the Double-Orbital Microplate Shaker for 384-Well Plates?

A double-orbital microplate shaker combines two overlapping circular motions to mix small volumes in 384- and 1536-well plates without splashing. It is the choice for high-density assays where conventional orbital shaking fails to mix microliter volumes effectively.

Overview

In high-density plates, small volumes and high surface tension limit mixing by simple orbital motion. Double-orbital shakers drive the platform in two superimposed circles, with orbit diameters such as 1 to 2 millimeters, producing a fluid vortex that mixes 5 to 50 microliter volumes within seconds without droplets leaving the wells. Speeds are typically 100 to 1,000 revolutions per minute, and mixing intensity is tuned with orbit diameter and speed. The shaker can be a standalone benchtop unit or an integrated module inside a plate reader or automation line, where precise plate seating matters. Many units have a low profile and open access for robotic plate handling. Because vigorous mixing in sealed plates can generate pressure, sealing films should be rated for shaking. Amplitude is small, so heavy foam or viscous fluids need extended mixing time.

How does it work?

A microplate shaker converts motor rotation into a small, controlled plate movement. In orbital designs, an eccentric cam or drive pin moves a platform in a circular path with an orbit diameter of about 1 to 4 millimeters, and speeds of 100 to 1,500 revolutions per minute. Linear shakers move the plate back and forth, and double-orbital shakers combine two circular motions for vigorous mixing in small wells. The amplitude is deliberately small so liquid swirls within each well without spilling, and surface tension limits splashing in high-density plates. Microplate clamps or non-slip platforms hold plates of different heights. Heating versions add a block or forced-air system for temperature control, and brushless motors with speed feedback provide consistent rotation for long incubations.

What are the key features?

• Double-orbital motion mixes 5 to 50 microliters in 384-well plates
• Orbit diameters from 1 to 2 millimeters prevent droplet loss
• Speed range of 100 to 1,000 revolutions per minute with fine adjustment
• Low-profile design with open access for robotic plate handling
• Available as stand-alone or integrated module in readers
• Precise plate seating with spring-loaded clamps for high-density plates

What are the technical specifications?

A typical double-orbital microplate shaker for 384-well plates configuration offers motion type of Double-orbital, orbit diameter of 1–2 mm, speed range of 100–1,000 rpm, suitable volumes of 5–50 µL (384-well), plate formats of 96-, 384-, 1536-well and mixing time (typical) of 5–60 s. 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 Double-Orbital Microplate Shaker for 384-Well Plates is used in high-throughput screening mixing, homogeneous assay reagent mixing, 384-well ELISA and bead incubations, cell lysis in high-density plates and kinetic assay initiation in plate readers. Across the wider Microplate Shakers class, laboratories also deploy it for ELISA incubation mixing, bead-based immunoassay suspension and cell suspension culture in plates.

Which standards and certifications apply?

Relevant standards and methods include ANSI/SLAS 1-2004 to 4-2004, IEC 61010-1, IEC 61010-2-051, IEC 61326-1 and ISO 13485 (IVD workflows). 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 shaker on a level, stable surface and secure plates with clamps to avoid walking at high speed. Seal plates with adhesive film or lids to prevent evaporation and cross-contamination during long incubations. Check speed accuracy with a tachometer and, for thermoshakers, temperature accuracy with a calibrated probe during qualification and periodically thereafter. Clean spills immediately with compatible disinfectants and avoid liquids entering the drive. When used inside incubators, confirm the motor is rated for high humidity and heat. Service motor bearings according to the supplier's recommended schedule.

How do I select the right Double-Orbital Microplate Shaker for 384-Well Plates?

Choose this variant for assays in 384- or 1536-well plates with small volumes where standard orbital shakers leave reagents unmixed. For 96-well work a conventional orbital shaker is enough. In an RFQ specify plate formats, volume range, orbit diameter, automation interface and height limit.

How does it compare with other Microplate Shakers variants?

Select a microplate shaker by motion type, speed range, orbit diameter and capacity. Orbital shakers with 2 to 3 millimeter orbit suit ELISA incubations and general mixing. Double-orbital or small-orbit models suit 384- and 1536-well plates, where splashing limits speed. Thermoshakers add heating and cooling for temperature-sensitive incubations. Check the plate carrier for your formats, including deep-well plates, and maximum load for stacked plates. Confirm low-speed stability for cell suspensions and high-speed performance for bead mixing. For incubators, choose models with low heat output and appropriate IP rating for humidity. Consider noise, timer and programmable profiles, and whether integration with automation requires open-lid access or a communication interface.