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MODEL
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B-722
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Measurement principle
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Ion electrode method
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Minimum
sample volume
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0.3mL or more*1
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Measurement range
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23 to 2300 ppm(mg/L) (10-3 to 10-1 mol/L)
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Display range
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0 to 9900ppm(mg/L)*2
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Range and Resolution
(Valid numbers)
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①0 to 1.0ppm : 0.1ppm
②0 to 99ppm : 1ppm
③100 to 990ppm : 10ppm
④1000 to 9900ppm : 100ppm
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Calibration
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Two-point*3
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Accuracy
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±10% of reading value.*4
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Functions
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Auto range change・Temperature compensation・Waterproof*5・Reading locking ・Automatic power off （30 minutes）
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Display
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Custom (monochrome) Digital LCD
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Operating
temperature/humidity
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5 to 40˚C, 85% or less in relative humidity (no condensation)
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Power
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CR2032 batteries (x2)
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Battery life
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Approx. 400 hours in continuous use
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Main Material
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ABS epoxy
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Dimensions
/Mass
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164mm × 29mm × 20mm (excluding projections) / Approx. 50 g (meter only, without batteries)
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Accessories included
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2 CR2032 batteries/1 Pipette/Instruction manual/Quick manual/Storage case/Standard solution
(150ppm&2000ppm)(14mL)/5 pieces of Sampling sheetB
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*1 Smaller amount(0.05mL or more) can be measured with the sampling sheet B. (Please close the light shield cover. If a sample that contain particulate, please use ”Sampling sheet holder” (sold separately))
*2 When the measured value is out of the measurement range, the displayed value blinks. It should be used only as a guide.
*3 Selectable between one-point and two-point calibrations.
*4 Repeatability in measurement of a standard solution after calibration using the same standard solution.
*5 IP67：no failure when immersed in water at a depth of 1 meter for 30 minutes. But the product can not be used underwater.
<Attention>The ion electrode may be subject to interference from other ionic species. The selectivity coefficient reflects the affinity between each ionic species and the electrode, and is used to correct for the influence of competing ions.
