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coastlines
Comes with metal and wood wedges
the arrow will show just the current trend
other side m/cm/2mm
OAKTON Waterproof Double Junction pH Testr 30 Student coastlinesHigh . 01 pH accuracy in a waterproof pocket sized instrument. This unique unit displys pH and temperature readings on a single large display. It also features a double juntion electrode ideal for dirty water and solutions with heavy metals or other contaminants. It is waterproof, dustproof and it's housing protects it from rugged field or plant environments. Range 10. 00 to 15. 00 pH Resolution 0. 01 pH Accuracy 0. 01 pH Calibration Up to three
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