Test Range: pH:(-2.00 ~ 19.99)pH  ORP:±1999Mv
Resolution:  pH:0.1/0.01 pH  ORP:1mV
Accuracy:   pH:±0.01 pH，ORP:±0.1% FS

pH range: -2.00 to 16.00 pH
Display：LCD display
Temperature range: 0 to 60˚C (32-140˚F)  

pH range: (-2.000-20.000) pH
Display： 7" TFT Touch screen
Temperature range: -10.0 -135.0°C （-14.0-275.0℉）  

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

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
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
Data Storage: 1000 Groups