Optical oxygen sensor with 10 m cable Measurement of dissolved oxygen at an advanced level Combines measurement accuracy with low maintenance thanks to state-of-the-art luminescence technology. Suitable for research and teaching, use in sewage and water works and aquaristics. Data transfer via USB possible. Modern technology The SD400 Oxi L uses optical luminescence technology. Your advantage: High measuring accuracy, fast response and absolutely user-friendly measuring. Low maintenance Thanks to luminescence technology, no electrolyte is needed. Regular refilling is therefore no longer necessary - and maintenance is reduced to a minimum. Data management By means of integrated software (''data logger'') the collection and analysis of data is simplified. Suitable for ''dilution BOD'' determination The electrode of the SD400 Oxi L is optimized for standard BOD bottles (NS 19/26). The device is therefore ideally suited for standard-compliant BOD determination of the dilution BOD.