Pen Meter - Dissolved Oxygen & TemperatureThis durable and highly accurate pen meter is purpose built for measuring both dissolved oxygen (DO) and temperature in a wide range of environments. Designed for portability and ease of use, it is ideal for field testing in aquatic research, environmental monitoring, aquaculture, or educational laboratory experiments. The unit's streamlined design and intuitive interface allow users to take fast, reliable readings with minimal setup. Its waterproof
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