Measurement Method: 
+ pH: Glass Electrode
+ ORP: Platinum Electrode
+ Ion: Ion Electrode
+ Conductivity: AC 2-electrode
+ DO: Membrane Polarographic 
+ Temperature: Thermistor Resistor

Conductivity Measuring frequency: Automatically selects 80Hz / 3kHz
Display unit: Touch Panel Color Graphic LCD
(Selectable 2-ch Simultaneous Display or Single Only Display) 
Measurement item / range:
+ pH: pH0.000 ~ 14.000
+ mV: (ORP) -2000.0 ~ 2000.0 mV
+ Ion: Depends on the sensor 
+ Conductivity: Depends on the cell 
+ Resistivity: Depends on the cell
+ Salinity: Conversion from conductivity
+ Concentration: Conversion from conductivity
+ TDS: Conversion from conductivity
+ DO: Depends on the electrode
+ Saturation: Depends on the electrode
+ Temperature: 
0.0 ~ 100 ° C
DO: 0.0 ~ 50 ° C
Ion: Depends on the sensor( No temperature measurement function)

Display Range:
+ pH pH-2000 ~ 16,000
+ mV (ORP) -2200.0 ~ 2200.0 mV
+ Ion:
ZOOM OFF:
0.0 ~ 19.9μg / L 
20 ~ 199μg / L 
0.20 ~ 1.99mg / L 
2.0 ~ 19.9mg / L 
20 ~ 199mg / L 
0.20 ~ 1.99g / L 
2.0 ~ 19.9g / L 
20 ~ 199g / L 
200 ~ 1990g / L 

ZOOM ON:
 0.00 ~ 19.99μg / L
 20.0 ~ 199.9μg / L
0.200 ~ 1.999mg / L
2.00 ~ 19.99mg / L
20.0 ~ 199.9mg / L
0.200 ~ 1.999g / L
2.00 ~ 19.99g / L
20.0 ~ 199.9g / L
200 ~ 1999g / L

+ Conductivity:
0.0 ~ 200.0μS / m (0.000 ~ 2,000μS / cm)
0.000 ~ 2.000mS / m (0.00 ~ 20.00μS / cm)
0.00 ~ 20.00mS / m (0.0 ~ 200.0μS / cm)
0.0 ~ 200.0mS / m (0.000 ~ 2.000mS / cm)
0.000 ~ 2.000S / m (0.00 ~ 20.00mS / cm)
0.00 ~ 20.00S / m (0.0 ~ 200.0mS / cm)
0.0 ~ 200.0mS / m (0.000 ~ 2.000S / cm)
SI Unit (S / m) and conventional unit (S / cm) selectable

+ Resistivity:
0.005 ~ 2.000Ω · m (0.5 ~ 200.0Ω · cm)
0.00 ~ 20.00Ω · m (0.000 ~ 2.000kΩ · cm)
00.0 ~ 200.0Ω · m (0.000 ~ 20.00kΩ · cm)
0.000 ~ 2.000kΩ · m (0.0 ~ 200.0kΩ · cm)
0.00 ~ 20.00kΩ · m (0.000 ~ 2.000MΩ · cm)
00.0 ~ 200.0kΩ · m (0.000 ~ 20.00MΩ · cm)
0.000 ~ 2.000MΩ · m (0.0 ~ 200.0MΩ · cm)
0.00 ~ 20.00MΩ · m (0 ~ 2.000MΩ · cm)
SI units (Ω · m) and conventional units (Ω · cm) selectable

+ Salinity:
0.00-4.04% (NaCl)
0.00-42.40psu (PSS: Sea water sanility)

+ Concentration:
0-2000%
0-20.00%
0-200.0% 

+ TDS:
0-99.99mg / L
0-999.9mg / L
0-9.999g / L
0-99.99g / L
0-999.9g / L 

+ DO:
0.00-22.00mg / L
(High range membrane set (option) 0.00-55.0mg / L) 

+ Saturation:
0-220.0%
(High range membrane set (option) 0-550%)

+ Temperature: -5.0 -110.0 ° C

Display Resolution Switching:
+ pH: 0.01pH / 0.001pH
+ mV: (ORP) 1mV / 0.1mV
+ Ion:
0.0μg / L ~ 1990g / L(Maximum to 3 digits) 
0.00μg / L ~ 1999g / L(Maximum 4 digits) 

Repeatability (Main body): 
+ pH: ± 0.002pH
+ mV: (ORP) ± 0.2mV
+ Ion: ± 0.5% FS
+ Conductivity: ± 0.5% FS
+ Resistivity: ± 0.5% FS
+ Salinity: ± 0.5% FS
+ Concentration: ± 0.5% FS
+ TDS: ± 0.5% FS
+ DO:  ± 0.03 mg / L (Standard membrane)
           ± 0.1 mg / L (High range membrane) 
+ Saturation: ± 1% (standard diaphragm / large diaphragm)
+ Temperature: ± 0.2 ℃

Temperature Compensation:
+ pH: 
ATC (Auto Temperature Compensation ): 0 ~ 100.0 ℃
MTC (Manual Temperature Compensation): 0 ~ 100.0 ℃ "
+ Conductivity:
Temperature compensation range :
- ATC: 0 ~ 100.0 ℃
- MTC: 0 ~ 100.0 ℃ "
N/A: ATC OFF
Standard Temperature Setting: 0-100.0 ° C
Temperature coefficient(Linear): 0-100% / ° C
Temperature coefficient(multipoint): 2-10 points
Pure Water Dual Temperature Compensation: Yes

+ DO: ATC(Auto Temperature Compensation): 0-50.0 ° C

PH calibration:
+ Standard pH measuring solution JIS, US standard solution
+ Custom Standard Solution, max-5 point calibration

Ion calibration: Max 5 point calibration
DO calibration: Auto Calibration (Zero Span calibration)
Temperature Calibration: 1 point calibration
Conductivity Concentration Conversion Setting: 2-10 points
DO Sanility Compensation Setting: Yes
DO ATM Pressure Compensation Setting: Yes
Perform Guaranteed Temperature, Humidity: 0 ~ 45 ℃ 20 ~ 85% or below(Condensation-free)
Data Memory: 2000 data each channel
Print function: The external printer option EPS-P30 can be connected
Auto Hold Function: Yes
Auto Hold Conditions Setting: Yes
Statistical Calculation Function: Average Value
Calibration History Creation Function: Max. 20 run lots
Interval Measurement: Yes
Security Function: Yes
Upper / Lower Limit Output Settings: Yes (only 1 channel)
External Input / Output:
+ RS-232C interface: Yes (2 channels)
+ USB (Host): Yes
+ USB(peripheral, Micro): Yes
+ Analog output: 
- pH: ± 700mV (pH0 ~ 14)
- mV (ORP): ± 1V (0 ~ ± 2000mV)
- Ion: 0 ~ 1VFS
- Conductivity / Resistivity / Salinity / Concentration / TDS: 0 ~ 1VFS
- DO / Saturation: 0 ~ 1VFS
- Range (Ion / Conductivity / Electricity / Salinity / Concentration / TDS): 100mV /Range
- Temperature: 0 ~ 1V (0 ~ 100 ℃)
- Alarm(1ch-only): Upper limit: Open collector
                              Lower limit: Open collector 
Option Connection:
+ External Printer: Yes
+ Turntable (TTT510 / 710): Yes
+ Electrodes Selector(ES-1G): Yes

+ Cell Selector(ES-1GC): Yes

+ Control Box(AC-1V): Yes

Power Source: AC100～240V（ AC Adapter）

Power Consumption: Approx. 18VA

Main Unit Dimensions(Excluding Protruding Parts): Approx. 130 W x 60 H x 230 D mm

Main Unit Weight: Approx. 0.9 kg

This product is used to measure pH, conductivity, resistance, salinity, DO, TDS, concentration in the laboratory