Obtain fast quantitative results in the field or lab! Just dip the strip in the sample and then compare with the color scale printed on the bottle.
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This durable grain size chart is made from transparent plastic offering the ability to do an accurate comparison and sizing of grains. Also references gravel.
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Designed for long-term monitoring in estuaries, lakes, streams, rivers, and oceans, this logger measures pH and water temperature. Bluetooth Low Energy® (BLE) connectivity allows the logger to communicate wirelessly with iOS device...
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