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Battery-powered biomedical signal isolator with selectable voltage/current output and fine adjustment.
The Nihon Kohden SS-401J is a compact, battery-powered biomedical signal isolator designed for electrical isolation and stimulus output in medical measurement and biomedical research applications. Battery operation helps reduce leakage-current and electrical-noise effects while separating the subject from the measurement system.
This used Nihon Kohden output isolator is suitable for signal isolation, controlled stimulus delivery, physiological measurement systems, and biomedical engineering workflows. It is offered in as-is condition, and its original performance and functionality should be verified before use.
Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.
We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.
We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.
With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
Tell us what you need and a scientist finds it for you, usually within the hour.
Last updated 19 October 2026
The middle half of the 123 with a price runs from €102 to €568.
1 other listing of this model is available.
