Description
SevenExcellence DO/BOD Expansion Unit is a dedicated modular accessory that extends multiparameter laboratory meters for dissolved oxygen and biochemical oxygen demand determinations. This expansion unit supports precise electrochemical measurements in water analysis, environmental testing and quality control workflows where DO and BOD parameters are required alongside other sensors. Compact construction yields a net weight of 0,138 kg and a gross weight of 0,156 kg, allowing straightforward integration into existing instrument setups without adding bulk. Supplied as a single piece, the unit belongs to the family of accessories for electrochemical measuring devices, conductivity meters, pH meters and oxygen meters. The expansion capability is realised through the SevenExcellence platform from manufacturer Mettler-Toledo OnLine, enabling laboratories to configure channels according to specific analytical needs. Its design focuses on reliable signal handling for oxygen-related assays while maintaining compatibility with standard laboratory benches and instrument racks. Researchers and technicians benefit from the modular approach that keeps the core meter adaptable for evolving measurement protocols in routine and specialised applications.
This article is part of Dissolved oxygen & multiparameter meters, in pH & electrochemistry.
Key features
- Pack size: 1 pc
- Product type: DO/BOD expansion unit
- Compatible platform: SevenExcellence
- Country of origin: China
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Questions about Expansion unit DO
What is this article?
Expansion unit DO is the article on this page. Luminix Health distributes Mettler-Toledo OnLine for laboratory use. It sits in Dissolved oxygen & multiparameter meters, inside pH & electrochemistry, in Lab instruments.
A dissolved-oxygen meter reads oxygen in a liquid, optically or with a Clark cell. A multiparameter meter adds pH, conductivity or both on one instrument. The sensor cap or the membrane is the consumable. A reading in air and a reading in water are different calibrations.
A pH meter is a voltmeter on a glass electrode. The voltage tracks hydrogen-ion activity, and the electrode is converted to pH only after it is adjusted with buffers of known value. Conductivity measures how well a solution carries a current, which for dilute salts tracks concentration. Dissolved oxygen and titration are further electrodes on the same idea: a sensor, a standard, and a reading that is only as fresh as the calibration. Buffer values and chemical identity sit on PubChem. Accreditation of the calibration laboratory is the field of BELAC and EURAMET.
Which category should I open next?
The category is pH & electrochemistry. The sub-category is Dissolved oxygen & multiparameter meters. The catalogue is Lab instruments.
Shelves beside this one are pH electrodes & sensors, pH meters, Conductivity meters & cells, Titrators & electrochemistry systems and pH & electrochemistry accessories.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.