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).