MODEL	K+(C-131)
Principle	Potassium ion electrode method
Display	LCD, 2-digit
Guarantee range	9-3900 ppm (10-3-10-1 mol/l)*
Display range	0-99 x 100 ppm
Resolution	1 ppm for 0-99 ppm 10 ppm for 10-99 x 10 ppm 100 ppm for 10-99 x 100 ppm
Calibration	2-point calibration by STD/SLOPE controls using standard calibration solutions STD:2000 ppm, SLOPE: 150 ppm
Repeatability	±20% of display value
Sample temperature	5-35°C/41-95°F (temperature compensated at ambient temperature)
Power	CR-2025 lithium cell ( x 2) approx.500 hrs continuous operation
Weight	Approx.40g, 1.4oz
Dimensions	95 x 55 x 9mm,3.7 x 2.2 x 0.35in
Standard accessories	K+ standard solution STD 2000 ppm, SLOPE 150 ppm
	Deionized water, sampling sheet, tweezers, pipet, instruction booklet

* Units can be used beyond 10^-3 to 10^-1 mol/l.

MODEL	NO3-(C-141)
Principle	Nitrate ion electrode method
Display	LCD, 2-digit
Guarantee range	62-6200 ppm (10-3-10-1 mol/l)*
Display range	0-99 x 100 ppm
Resolution	1 ppm for 0-99 ppm 10 ppm for 10-99 x 10 ppm 100 ppm for 10-99 x 100 ppm
Calibration	2-point calibration by STD/SLOPE controls using standard calibration solutions STD:2000 ppm, SLOPE: 150 ppm
Repeatability	±20% of display value
Sample temperature	5-35°C/41-95°F (temperature compensated at ambient temperature)
Power	CR-2025 lithium cell ( x 2) approx.500 hrs continuous operation
Weight	Approx.40g, 1.4oz
Dimensions	95 x 55 x 9mm,3.7 x 2.2 x 0.35in
Standard accessories	NO3- standard solution STD 2000 ppm, SLOPE 150 ppm
	Deionized water, sampling sheet, tweezers, pipet, instruction booklet

* Units can be used beyond 10^-3 to 10^-1 mol/l.

CARDY Ion Meters'
Electrode Selectivity Coefficients

	Na+	K+	NO3-
Selectivity coefficient	K+=1 x 10-2 Rb+=1 x 10-2 Li+=1 x 10-3 NH4+=6 x 10-3 Ca2+=1 x 10-4 Sr2+=1 x 10-4 Ba2+=1 x 10-4 Mg2+=1 x 10-4 Cs+=3 x 10-3 pH range:pH3-9 (at 10-3 mol/l)	Rb+=1 x 10-1 Na+=3 x 10-4 NH4+=7 x 10-3 Mg2+=1 x 10-5 Cs+=4 x 10-3 Ca2+=7 x 10-7 pH range:pH 2-9 (at 10-3 mol/l)	l-=7 x 10-10 Cl-=4 x 10-2 Br-=9 x 10-1 ClO4-=3 x 10-3 NO2-=7 x 10-1 pH range:pH 3-8 (at 10-3 mol/l)