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Membrane assembly consists of a pre-assembled membrane, membrane lock, O-ring, and cap. Simply attach the membrane assembly onto your probe.
Take measurements immediately – no warm up required! The independent 100% and zero adjustment calibrations and offset adjustment capabilities provide superior accuracy. Key in salinity and pressure manually, and the meter automatically calculates offset values. The DO 300 also measures temperature in °C or °F. Other features include automatic temperature compensation, hold function, auto-off, and ready indicator. Order DO probe assembly separately. This waterproof, dustproof meter has an IP67 rating and even floats! The meter stores and recalls up to 50 dissolved oxygen readings with temperature, and real-time clock stamps stored data and calibration data with the date and time. The dual backlit display shows mg/L (ppm) or % saturation plus temperature (°C/°F selectable).
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