Conductivity range: 0.00 μ S/cm to 100 mS/cm
Conductivity Reference Temp: 25 ºC
Conductivity Accuracy: ± 1.5% FS
Measurement Reading Mode: Continuous 

Conductivity range: 0.000 μ S/cm to 1000 mS/cm
Resistivity range: 5.00 Ω ·cm~20.00 M Ω ·cm
TDS range: 0.00mg/L~300g/L
Salinity range: (0.00~8.00)%

pH Range: -2.000 to 20.000 pH
mV/ORP Range: -2000.00 to 2000.00 mV
Temp Range: - 10 to 135 ºC, 14 to 275 ºF
pH Standard Recognition: NIST, GB, DIN, USA, MERK, JIS buffers

pH Range: -2.000 to 20.000 pH
mV/ORP Range: -2000.00 to 2000.00 mV
Temp Range: -5 to 130 ºC
Data Storage: 1000 Groups

pH Range: -2.00 to 20.00pH
mV Range: -2000.0 to 2000.0 mV
Temp Range: -5 to 110 ºC, 23 to 230 ºF
pH Standard Recognition: NIST, GB and DIN buffers

pH Range: -2.000 to 20.000 pH
mV Range: -2000.00 to 2000.00 mV
Temp Range: - 10 to 135 ºC, 14 to 275 ºF
pH Standard Recognition: NIST, GB, DIN, USA and MERK buffers

pH Range: -2.00 to 18.00 pH
pH Accuracy: ±0.01 pH
mV Range: -1999 to 1999 mV
Reading Mode: Auto Read, Continuous

pH Range: -2.00 to 18.00 pH
pH Accuracy: ±0.01 pH
mV Range: -1999 to 1999 mV
Temp Range: -5 to 110 C(23 to 230 F)

pH Range: 0.00 to 14.00 pH
mV Range: -1800 to 1800 mV
pH Standard Recognition: NIST buffers
Manual temperature compensation

DO Concentration Range: 0.00 to 99.99 mg/L
DO Saturation Range: (0.0 to 600.0)%
Temp Range: -10 to 135 ºC, 14 to 275 ºF
Data Storage: 500 results each

DO Concentration Range: 0.00 to 99.99 mg/L
DO Saturation Range: (0.0 to 600)%
Temp Range: --10 to 135 ºC, 14 to 275 ºF
Data Storage: 1000 Groups

DO Concentration Range: 0.00 to 99.99 mg/L
DO Saturation Range: (0.0 to 600)%
Temp Range: -5 to 130 ºC
Data Storage: 1000 Groups