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Opentrons Flex Magnetic Block

Opentrons Flex Magnetic Block (GEN 1) is a 96-well magnetic well plate holder containing static ring magnets, specifically designed for use with the Flex Robot. Use it with the Flex Gripper and skirted 96-well PCR or deep-well plates to facilitate quick and efficient separation using magnetic beads. This module is not compatible with the OT-2.

Prices listed here are valid in the US and select other territories. Please get in touch with your local team for pricing for your territory.



1-Year Warranty

Ships in 4 weeks

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96 magnetic wells

High-strength neodymium ring magnets fixed to a spring-loaded bed

Use with gripper

For use with Opentrons Flex and Opentrons Flex Gripper; not compatible with OT-2

Labware compatibility

Compatible with a range of labware, various magnetic bead products, and protocols with volumes from 10 µL to 2 mL

Tech Specs


136 × 94 × 45 mm (l/w/h)


1.13 kg

Module Power

None, module is unpowered

Magnet Grade

N52 neodymium

Environmental Conditions

Indoor use only

Ambient Temperature

20–25 °C

Relative Humidity

30–80%, non-condensing


A wide range of 96-well microplates, containing volumes from 10 µL to 2 mL

Recommended labware

We recommend using Opentrons Tough PCR Plates and NEST 96 Deep Well Plates with the Opentrons Flex Magnetic Block, as they are full-skirted and have rigid frames, which are compatible with the Opentrons Flex Gripper



The Opentrons Flex Magnetic Block GEN1 is compatible with the Opentrons Flex robot, while the OT-2 Magnetic Module GEN2 is compatible with the OT-2 robot.

The Magnetic Block is a plate-sized magnet that relies on the Opentrons Flex Gripper GEN1 to move your plates on and off the block. Conversely, the Magnetic Module is a powered unit that turns the magnets on and off, and is intended for use with a liquid handling robot without a gripper.

Yes. Compatible labware for the Opentrons Flex Magnetic Block includes:

Opentrons Tough 0.2 mL PCR well plate (full skirt)

NEST 2 mL 96 Deep Well Plate

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