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| Warranty: | 3 years |
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Reliable Automatic Temperature Compensation (ATC) ensures accurate measurements in water sources of all temperatures.
The water quality meter turns off automatically after a few minutes of inactivity to save batteries.
Automatically saves the measurement results after completion, making it easy to view the data later.
Ideal for aquariums, hydroponics, marine, aquaculture and any water source.
Concentration units (ppm, mg/L, mol/L, mmol/L) and ionic media are selectable
Salinity and atmospheric pressure compensation eliminates measurement errors.
USB interface for easy data transfer
Can save 500 sets of measurement data for easy comparison
| Model | MWQ-P900 | MWQ-P901 | MWQ-P902 | MWQ-P903 | MWQ-P904 | |
| pH | Range | -2.000-20.000pH | - | |||
| Resolution | 0001,0.01,0.1pH, selectable | - | ||||
| Accuracy | 0.002pH | - | ||||
| Calibration Points | 1 to 5 points | - | ||||
| pHBuffer Options | USA, NIST, DIN, 2 custom buffers | - | ||||
| ORP | Range | ±1999.9mV | - | |||
| Resolution | 0.1, 1mV, selectable | - | ||||
| Accuracy | ±0.2mV | - | ||||
| Calibration Points | 1 point | - | ||||
| Ion | Range | 0.001~19999 (depending on the range of ISE) | - | - | - | - |
| Resolution | 0.001, 0.01, 0.1, 1 | - | - | - | - | |
| Accuracy | ±0.5% F.S. (monovalent), ±1% F.S. (divalent) | - | - | - | - | |
| Measurement Units | ppm, mg/L, mol/L, mmol/L | - | - | - | - | |
| Calibration Paints | 2 to 5 points (0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000) | - | - | - | - | |
| Conductivity | Range | 0.01~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm | - | 0.01~20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm | ||
| Resolution | 0001,0.01,0.1,1 | - | 0001,0.01,0.1,1 | |||
| Accuracy | ±0.5% F.S. | - | ±0.5% F.S. | |||
| Calibration Paints | 1 to 5 points | - | 1 to 5 points | |||
| Calibration Solutions | 10µS/cm, 84µS/cm, 1413µS/cm, 12.88mS/cm, 111.8mS/cm | - | 10µS/cm, 84µS/cm, 1413µS/cm, 12.88mS/cm, 111.8mS/cm | |||
| Temperature Coefficient | Linear(0.0-10.0%/°C ).pure water | - | Linear(0.0-10.0%/°C ).pure water | |||
| Reference Temperature | 20/25°C | - | 20/25°C | |||
| Cell Constant | K=0.1, 1, 10 or custom | - | K=0.1, 1, 10 or custom | |||
| TDS | Range | 0~10.00, 100.0, 1000ppm, 10.00, 200.0ppt | - | 0~10.00, 100.0, 1000ppm, 10.00, 200.0ppt | ||
| Resolution | 001,0.1,1 | - | 001,0.1,1 | |||
| Accuracy | ±1% F.S. | - | ±1% F.S. | |||
| TDS Factor | 0.1~1.0 (default 0.5) | - | 0.1~1.0 (default 0.5) | |||
| Salinity | Range | 0.00~42.00psu, 0.00~80.00ppt | - | 0.00~42.00psu, 0.00~80.00ppt | - | 0.00~42.00psu, 0.00~80.00ppt |
| Resolution | 0.01 | - | 0.01 | - | 0.01 | |
| Accuracy | ±1% F.S. | - | ±1% F.S. | - | ±1% F.S. | |
| Resistivity | Range | 0.00~20.00MΩ | - | 0.00~20.00MΩ | - | 0.00~20.00MΩ |
| Resolution | 0.01 | - | 0.01 | - | 0.01 | |
| Accuracy | ±1% F.S. | - | ±1% F.S. | ±1% F.S. | ±1% F.S. | |
| DO | Range | 0.00~20.00mg/L, 0.0~200.0% saturation | - | - | 0.00~20.00mg/L, 0.0~200.0% saturation | 0.00~20.00mg/L, 0.0~200.0% saturation |
| Resolution | 001mg/L,0.1% | - | - | 001mg/L,0.1% | 001mg/L,0.1% | |
| Accuracy | ±0.2mg/L, ±2.0% | - | - | ±0.2mg/L, ±2.0% | ±0.2mg/L, ±2.0% | |
| Calibration Points | 1 or 2 points | - | - | 1 or 2 points | 1 or 2 points | |
| Barometric Pressure Correction | 60.0~112.5kPa/450~850mmHg, manual | - | - | 60.0~112.5kPa/ 450~850mmHg, manual |
60.0~112.5kPa/450~850mmHg, manual | |
| Salinity Correction | 0.0~50.0g/L, manual | - | - | 0.0~50.0g/L, manual | 0.0~50.0g/L, manual | |
| General Spec. | Temperature Compensation | 0~100°C/32~212°F, manual or automatic | ||||
| Memory | 500 data sets, USB communication interface | |||||
| Power Requirements | 3× 1.5V AA batteries or DC5V power adapter | |||||
| Sizes(W×D×H) | 170× 85×30 | |||||
| Shipping size (W×D×H)(mm) | 450x320x100 | |||||
| N.W./G.W. (kg) | 0.3/2 | |||||
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