Horiba LAQUA Na+ Sodium Ion Meter (B-722)

In stock

This sodium ion meter can measure samples as small as 0.3mL and can be used in the field or the lab. It has an ion selective sensor that disregards pH and most other ions.

Horiba LAQUA Na+ Sodium Ion Meter (B-722)


  • Small sample size
  • Automatic range switching
  • Highly selective sensor
  • Ultrathin, lightweight and portable
  • IP67 Waterproof
  • 30 minute automatic power off
  • Temperature compensation
  • Autocalibration
  • One or two point calibrations
  • Replacement sensor electrode sold separately
With B-722 the Horiba Sodium Ion Meter, determining sodium concentration is as simple as placing a tiny sample on the meter's flat sensor. Accurate measurements of sodium ion concentrationcans can be taken from a sample as small as 0.3mL. This meter employs a selective sodium ion electrode that is unaffected by pH and the presence of other ions, enabling the accurate measurement of sodium ion concentrations. The meter's microprocessor converts this information to give a measurement of sodium concentration (Na+).

Unit Ship Weight: 2 lbs



*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.
*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.

Measurement principle

Ion electrode method

sample volume

0.3mL or more*1

Measurement range

23 to 2300 ppm(mg/L) (10-3 to 10-1 mol/L)

Display range

0 to 9900ppm(mg/L)*2

Range and Resolution
(Valid numbers)

①0 to 1.0ppm : 0.1ppm
②0 to 99ppm : 1ppm
③100 to 990ppm : 10ppm
④1000 to 9900ppm : 100ppm




±10% of reading value.*4


Auto range change・Temperature compensation・Waterproof*5・Reading locking ・Automatic power off (30 minutes)


Custom (monochrome) Digital LCD


5 to 40˚C, 85% or less in relative humidity  (no condensation)


CR2032 batteries (x2)

Battery life

Approx. 400 hours in continuous use

Main Material

ABS epoxy


164mm × 29mm × 20mm  (excluding projections) / Approx. 50 g (meter only, without batteries)

Accessories included

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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