Sodium Meter

Measurement principle

Ion electrode method

Minimum sample volume

0.05 mL*1, 0.3 mL or more

Measurement range

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

Display range*2

0 to 9900 ppm (mg/L)

Range and Resolution

1) 0 to 1.0 ppm : 0.1 ppm
2) 0 to 99 ppm : 1 ppm
3) 100 to 990 ppm : 10 ppm
4) 1000 to 9900 ppm : 100 ppm

Calibration

Two-point*3

Accuracy*4

+10% of reading value

Functions

Auto range change,  Temperature compensation
IP67 Water/Dust proof*5, Auto hold
Automatic power off (30 minutes)

Display

Custom (monochrome) digital LCD

Operating temperature/ humidity

5 to 40^oC, 85% or less in
relative humidity (no condensation)

Power

CR2032 batteries (x2)

Battery life

Approx. 400 hours in continuous use

Main Material

ABS epoxy

Dimensions /Mass

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

Interfering ion influence Selectivity coefficient and pH range

K⁺, Rb⁺ = 1x10^-2 / Ba²⁺, Sr²⁺, Ca²⁺, Mg²⁺ = 1x10^-4 /
Li⁺ = 1x10^-3 / Cs⁺ = 3 x 10^-3 / NH⁴⁺ = 6x10^-3 /
pH Range: pH 3~9 at 10^-3 mol/L Na⁺