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Versatile, waterproof oximeter ideal for field-based dissolved oxygen measurements.
The WTW OXI 3205 Portable Oximeter, combined with the Cellox 325 probe, offers precise and reliable dissolved oxygen measurements ideal for fieldwork. This robust, waterproof instrument (IP 67 rated) excels in challenging environments, making it perfect for environmental monitoring. The device features a backlit graphic LCD for easy readability and automatic atmospheric pressure compensation between 500 and 1100 mbar. Its measurement range spans from 0.00 to 90 mg/L with a resolution of 0.01 or 0.1 mg/L, and it maintains an accuracy of ±0.5%. Temperature readings are precise to ±0.1°C, functioning efficiently in temperatures of -5 to 50°C. It operates on 4 x 1.5 V AA or 4 x 1.2 V NiMH rechargeable batteries, ensuring sustained use in the field. Weighing just 2KG, the OXI 3205 is a convenient, portable choice for rigorous dissolved oxygen analysis.
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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 5 November 2026
The middle half of the 92 with a price runs from €79 to €1,694.
1 other listing of this model is available.
