Microdialysis Swivels

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For years, Instech's 375/D/22QE swivel has been the industry-standard for awake animal microdialysis. It has quartz-lining on the center channel to minimize dead volume and reactivity with neuroatransmitters.

The newer 375/D/22QM swivel incorporates a miniature seal system for ultra-low torque and quartz lining on both the center and side channels. It is the first dual channel swivel that can be used with mice and it is ultimate awake-animal microdialysis swivel for any species. However, it is more fragile than the 'QE model.

MCLA or SMCLA lever arms are strongly recommended. Connect to FEP tubing using 0.015in ID silicone tubing connectors instead of traditional blue widgets (CMA part no 340-9400), to avoid damage to the swivel side outlet tubes when removing the lines.



NOTE: If you plan to mount this swivel in a CMA/Microdialysis model CMA 120 balance arm, you must use our GIMBAL/CMA adapter to prevent damage to the swivel from the forces experienced in this balance arm (the warranty is void if it is not used).

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Fluid Swivels for Continuous Animal Infusion

The swivel, a device that rotates to keep the catheter from tangling, is a critical part of any continuous animal infusion system. The Instech fluid swivel has been in laboratory use for over 40 years and has earned a reputation as the finest in the industry.

Instech swivels are manufactured with precision to ensure ease of rotation, durability and reliability. The design minimizes internal dead volume and eliminates stagnant regions along the fluid path. Fluids passing through the swivel touch only stainless steel hypodermic tubing and Teflon. Self-adjusting seals, at the heart of every Instech swivel, actually improve with use.

Swivels are available in a variety of sizes for use with a range of species — rodents to large animals. They work with Instech’s harness, button and head block tethers. For optimal performance they should be mounted above the animal’s cage with one of Instech’s swivel/cage mounts, ideally counter-balanced to remove slack in the tether. Swivels are also available as part of pre-assembled infusion kits.


Frictional Torque by Model

Swivel torque

All models are appropriate for rats.

Additional information

Dual Swivel Model

375/D/22QE – Microdialysis swivel for rats, quartz-lined center channel, 375/D/22QM – Low-torque dual channel quartz-lined swivel


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