The easy-to-operate DOH-SD1 Series dissolved-oxygen meter has a real-time SD-card data logger. The meter features an LCD with green light backlighting, altitude and salt adjustments, RS-232/USB ...
A study published in Science Advances reveals that global rivers are experiencing widespread and sustained deoxygenation ...
Study of more than 21,000 river systems finds decades of steady oxygen decline, with tropical rivers hit hardest ...
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