GENERAL FEATURES
● 300F Series Benchtop Metesr: High resolution LCD display, 5.7 inches.
● 400F Series Benchtop Metesr: Color high resolution LCD display, 5.7 inches.
● Multi-reading feature allows auto-read, timed-read and continuous-read.
● Automatic/Manual temperature compensation ensures accurate results.
● Auto-hold feature senses and locks the measurement endpoint.
● Data storage 500 sets (GLP-compliant).
● Support for USB or RS-232 communication.
● Reset feature automatically resumes all settings back to factory default options.
● IP54 waterproof.
pH
● 1-5 points calibration with standard recognition.
● PH400F: Selectable pH buffer groups, including NIST, DIN, GB,
USA, MERK.
● PH300F: Selectable pH buffer groups, including NIST, DIN, GB.
● Automatic electrode diagnosis with pH slope and offset display.
Conductivity
● 1-3 points calibration with standard recognition.
● Settable parameters, including cell constant, temperature
compensation coefficient and TDS factor.
● Temperature compensation type (none, linear, pure water).
Ion
● 1-5 points calibration.
● Selectable measurement unit, including μg/L, mg/L, g/L, mmol/L, pX, etc.
● I400F: Multi-measurement modes are supported, including Direct
Reading mode, Standard Addition mode, Sample Addition mode and GRAN mode.
● I300F: Measurement mode is Direct Reading mode.
● Over 10 methods are built-in, including F-, Cl-, Br-, I-, NO3-, BF4-,NH4+, K+, Na+, Ca2+, Cu2+, Pb2+, Ag+ and etc.; user-defined method is supported.
DO
● Support for air-saturated water or zero oxygen calibration.
● Auto barometric pressure compensation.
● Manual Salinity Factor Correction.
● Selectable pressure unit, including kPa, mbar, Torr, Atm.
| Model | M300F | M300F-A | PH300F | EC300F | I300F | PH400F | EC400F | I400F | DO400F | |
| Parameters | pH/EC/ISE/DO/Temp. (mV/pX/Resistivity/TDS/Sal/ DO Saturation) | pH/EC/ISE/Temp. (mV/pX/Resistivity/ TDS/Sal.) | pH/Temp. (mV) | EC/Temp. (Resistivity/ TDS/Sal.) | pH/ISE/Temp. (mV/pX) | pH/Temp. (mV) | EC/Temp. (Resistivity/TDS/ Sal.) | pH/ISE/Temp. (mV/pX) | DO/Temp. (DO Saturation) | |
| pH | Range | -2.00 to 20.00pH | ● | ● | / | ● | -2.000 to 20.000 pH | / | ● | / |
| Resolution | 0.1, 0.01 pH | ● | ● | / | ● | 0.1, 0.01, 0.001pH | / | ● | / | |
| Accuracy | ±0.01 pH | ● | ● | / | ● | ±0.002 pH | / | ● | / | |
| Calibration Points | Up to 5 | ● | ● | / | ● | ● | / | ● | / | |
| Standard Customization | Yes | ● | ● | / | ● | ● | / | ● | / | |
| Standard Recognition | NIST, GB and DIN buffers | ● | ● | / | ● | NIST,GB,DIN,USA and MERK buffers |
/ | ● | / | |
| mV | Range | -2000.0 to 2000.0 mV | ● | ● | / | ● | -2000.00 to 2000.00 mV | / | ● | / |
| Resolution | 0.1 mV | ● | ● | / | ● | 0.1, 0.01 mV | / | ● | / | |
| Accuracy | ±0.3 mV or ±0.1 % of reading whichever is greater | ● | ● | / | ● | ±0.1 mV or ±0.03 % of reading whichever is greater |
/ | ● | / | |
| pX | Range | -2.00 to 20.00 | ● | / | / | ● | / | / | -2.000 to 20.000 pX | / |
| Resolution | 0.1, 0.01 pX | ● | / | / | ● | / | / | 0.1, 0.01, 0.001 pX | / | |
| Accuracy | ±0.02 pX | ● | / | / | ● | / | / | ±0.002 pX | / | |
| Calibration Points | Up to 5 | ● | / | / | ● | / | / | ● | / | |
| ISE | Range | 1E-9 to 9.999E9 | ● | / | / | ● | / | / | ● | / |
| Unit | mol/L, mmol/L, g/L, mg/L, μg/L, ppm | ● | / | / | ● | / | / | ● | / | |
| Resolution | Up to 4 significant digits | ● | / | / | ● | / | / | ● | / | |
| Accuracy | ±0.5 % | ● | / | / | ● | / | / | ±0.3 % | / | |
| Calibration Points | Up to 5 | ● | / | / | ● | / | / | ● | / | |
| Conductivity | Range | 0.000 μS/cm to 1000 mS/cm | ● | / | ● | / | / | ● | / | / |
| Resolution | 0.001 μS/cm minimum; changed with range | ● | / | ● | / | / | ● | / | / | |
| Accuracy | ±1.0 % FS | ● | / | ● | / | / | ±0.5 % FS | / | / | |
| Reference Temperature | 20, 25 ºC | ● | / | ● | / | / | ● | / | / | |
| Calibration Points | Up to 3 | ● | / | ● | / | / | ● | / | / | |
| Standard Recognition | 84μS/cm, 1413μS/cm; 12.88mS/cm | ● | / | ● | / | / | ● | / | / | |
| Resistivity | Range | 5.00Ω·cm ～ 20.00MΩ·cm | ● | / | ● | / | / | 5.00Ω·cm~100.00MΩ·cm | / | / |
| Resolution | 0.01Ω·cm minimum | ● | / | ● | / | / | ● | / | / | |
| Accuracy | ±1.0 % FS | ● | / | ● | / | / | ±0.5 % FS | / | / | |
| TDS | Range | 0.00mg/L ～ 300g/L | ● | / | ● | / | / | 0.00mg/L~1000g/L | / | / |
| Resolution | 0.01mg/L minimum; changed with range | ● | / | ● | / | / | 0.001mg/L minimum; changed with range | / | / | |
| Accuracy | ±1.0% FS | ● | / | ● | / | / | ±0.5 % FS | / | / | |
| Salinity | Range | (0.00 ～ 8.00)% | ● | / | ● | / | / | ● | / | / |
| Resolution | 0.01% | ● | / | ● | / | / | ● | / | / | |
| Accuracy | ±0.2% | ● | / | ● | / | / | ±0.1% | / | / | |
| Dissolved Oxygen Concentration | Sensor Type | Polarographic | / | / | / | / | / | / | / | ● |
| Range | 0.00 to 20.00 mg/L | / | / | / | / | / | / | / | 0.00 to 99.99mg/L | |
| Resolution | 0.01mg/L | / | / | / | / | / | / | / | ● | |
| Accuracy | ±0.3mg/L | / | / | / | / | / | / | / | ±0.3mg/L (0.00 to 20.00 mg/L) ±10% (20.00 to 99.99 mg/L) |
|
| Calibration Points | Air-saturated water or zero point | / | / | / | / | / | / | / | ● | |
| Barometric Compensation | yes | / | / | / | / | / | / | / | ● | |
| Manual Salinity Factor Correction | yes | / | / | / | / | / | / | / | ● | |
| Saturation | Range | （0.0 to 200.0）% | / | / | / | / | / | / | / | (0.0 to 600.0) % |
| Resolution | 0.1% | / | / | / | / | / | / | / | ● | |
| Accuracy | ±10.0 % | / | / | / | / | / | / | / | ● | |
| Temperature | Range | -5 to 110 ºC, 23 to 230 ºF | ● | ● | ● | ● | -10 to 135 ºC, 14 to 275 ºF |
● | ● | ● |
| Unit | ºC, ºF | ● | ● | ● | ● | ºC, ºF | ● | ● | ● | |
| Resolution | 0.1 | ● | ● | ● | ● | 0.1 | ● | ● | ● | |
| Accuracy | ±0.2 | ● | ● | ● | ● | ±0.1 | ● | ● | ● | |
| Measurement | Reading Mode | AutoRead( Fast, Medium, Slow), Timed, Continuous | ● | ● | ● | ● | ● | ● | ● | ● |
| Reading Prompts | Reading, Stable, Locked | ● | ● | ● | ● | ● | ● | ● | ● | |
| Temp. Compensation | ATC, MTC | ● | ● | ● | ● | ● | ● | ● | ● | |
| Data Management | Data Storage | 500 results each | ● | ● | ● | ● | ● | ● | ● | ● |
| GLP Features | Yes | ● | ● | ● | ● | ● | ● | ● | ● | |
| Inputs | pH Electrode | BNC(Q9) | ● | ● | / | ● | ● | / | ● | / |
| Temp./DO Probe | 4-pin aviation connector | ● | ● | / | ● | ● | / | ● | ● | |
| Temp. /EC Probe | 5-pin aviation connector | ● | / | ● | / | / | ● | / | / | |
| Outputs | USB | PC | ● | ● | ● | ● | ● | ● | ● | ● |
| RS 232 | printer | ● | ● | ● | ● | ● | ● | ● | ● | |
| Display Options | Backlight | Yes | ● | ● | ● | ● | ● | ● | ● | ● |
| Auto Shut-down | 1~60 min, off | ● | ● | ● | ● | ● | ● | ● | ● | |
| IP Rating | IP54 | ● | ● | ● | ● | ● | ● | ● | ● | |
| Date and Time | Yes | ● | ● | ● | ● | ● | ● | ● | ● | |
| General | Power | AC Adapter，100-240 VAC input, DC9V output | ● | ● | ● | ● | ● | ● | ● | ● |
| Dimensions | 242 x 195 x 68 mm | ● | ● | ● | ● | ● | ● | ● | ● | |
| Weight | 900g（1.98 lb） | ● | ● | ● | ● | ● | ● | ● | ● | |