Dissolved Oxygen Suspension Tester is a specialized instrument designed for precise measurement of dissolved oxygen (DO) content in various aqueous environments. It is particularly crucial in applications where samples need to be analyzed without agitation, such as in BOD (Biochemical Oxygen Demand) bottles or other static vessels.

This tester typically features a robust, suspended probe that is carefully lowered into a stationary sample. Its core technology often relies on a Clark-type polarographic sensor, consisting of a gas-permeable membrane, an electrolyte solution, and electrodes (a cathode and an anode). Oxygen from the sample diffuses through the membrane and is reduced at the cathode, generating an electric current directly proportional to the dissolved oxygen concentration.

Key advantages include minimal sample disturbance, which is vital for accurate BOD testing and other incubation studies. Modern versions offer features like automatic temperature compensation, data logging, and user-friendly calibration. It is an indispensable tool in wastewater treatment, aquaculture, environmental monitoring, and biological research, providing critical data for assessing water quality and ecosystem health.

Key Features:

• Static Measurement: Ideal for BOD bottles and non-agitated samples.

• Polarographic Sensor: Provides reliable and accurate DO readings.

• Temperature Compensation: Ensures accuracy across varying temperatures.

• Portable & Durable: Designed for use in both field and laboratory settings.