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B-212 Main Specification   Compact pH Meter Twin pH B-212 Even if you drop it in the water, there is nothing to fear. Its waterproof structure makes the Twin ideal for carefree outdoor use and expands in one stroke the scope of pH measurement activities. *impervious to water for 30 minutes up to a depth of 1 meter. Proper function is not assured if immersed deeper than 1 meter Immersion measurement To take measurement of water quality in rivers or lakes, just immerse the sensor in the water and note the measurement results. Scoop measurement For hard to reach places, just immerse the sensor in the solution and the sensor guard will scoop up a sample. Lay the Twin flat to measure.   Flat measurement To measure solids or powders Just place the sample directly on the sensor. Before measuring earth, powder, and other solid samples with low moisture content, add a drop or two of deionized water. To measure in drops Use a eye-dropper to drop about 0.1 mL of the sample solution on the sensor. To measure rigid surfaces To measure surface pH, wipe the surface of the sample with a sampling sheet dampened with deionized water and place the sheet on the sensor. Top of Page