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Versatile Jenway 3540 meter measures pH 2–20, conductivity 0.01 μS/cm–1.999 S/cm with temperature and ORP support.
The Jenway 3540 is a precision combined pH and conductivity meter designed for comprehensive water quality testing in laboratory environments. It provides reliable measurements essential in biotechnology, molecular diagnostics, and environmental monitoring applications where accurate pH, conductivity, salinity, TDS, resistivity, and ORP data are critical.
_Key technical features include:_
_Widely adopted in water quality laboratories, aquaculture, hydroponics, and biotechnology research, the Jenway 3540 is essential for accurate environmental parameter monitoring and critical in applications ranging from synthetic biology research to clinical diagnostics, where precise pH and conductivity measurements inform downstream processes._
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.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options 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 21 October 2026
The middle half of the 114 with a price runs from €121 to €705.
