| Automatic Buffer Recognition | Yes |
| Backlight | Yes |
| Barometric Pressure Measurement | Automatic compensation of DO when using an LDO or LBOD probe |
| Calibration | Demal (1D/ 0.1D/ 0.01D); |
| Molar (0.1M/ 0.01M/0.001M); |
| NaCl (0.05%; 25µS/cm; 1000µS/cm; 18mS/cm); |
| Standard sea water; |
| User defined |
| Calibration Intervals/Alerts/Reminder | Off, selectable from 2 hours to 7 days |
| Communication | Integrated USB type A (for USB 2.0 flash memory device, printer, keyboard) and Integrated USB type B (for PC) |
| Compliance Certifications | CE.WEEE |
| Conductivity measurement | Yes |
| Conductivity Measurement Range | 0.01 µS/cm - 200.0 mS/cm |
| Conductivity resolution | 0.01 µS/cm - 0.1 mS/cm upon selected measuring range |
| Contents | Meter Only |
| Custom Calibration Standards | Yes |
| Data Export | Download via USB connection to PC or flash memory device. Automatically transfer entire data log or as readings are taken. |
| Data Memory | 500 records/FIFO |
| Data Storage | Automatic, GLP ISO compliant reading data stored with calibration details. |
| Dimensions | 859 x 175 x 235 mm (3.38 x 6.88 x 9.25 in.) |
| Display | Detailed mode/Large mode |
| Display Type | 440 x 160 pixel LCD with backlight illumination |
| DO Measurement Range | 0.1 - 20.0 mg/L (ppm) 1 - 200% saturation |
| DO Resolution | 0.1 |
| DO sensor calibration | • 100% (water-saturated air (100%) calibration |
| • 100% with 0 (water-saturated air (100%) calibration with 0 point |
| • mg/L (calibration with a specified dissolved oxygen concentration (mg/L) solution) |
| • mg/L with 0 (calibration with a specified dissolved oxygen concentration (mg/L) solution with 0 point) |
| • Factory (calibration with the default LDO calibration) |
| Electrode stand | Optional |
| GLP Features | Date; Time; Sample ID; Operator ID |
| Instrument | Bench |
| IP Rating | IP54 (Resistant to spray of water; Dust-proof) |
| ISE Direct Measurement Range | Yes |
| ISE Electrode Calibration | 2 - 5 points |
| Kit? | No |
| Languages | English, French, German, Italian, Spanish, Danish, Dutch, Polish, Portuguese, Turkish, Swedish, Czech, Russian |
| Lock Function | Continuous / Auto-stabilization ("press to read") / At Interval |
| Measurement Method | Probe specific programmed method settings |
| Model | HQ430D – Multi/1 Channel |
| mV Measurement at Stable Reading | Yes |
| mV Measurement Range | -3000 |
| mV Resolution | 0.1 mV |
| Needed Cable Length | NA |
| Operating Error Messages | Clear text error messages displayed |
| Operating Humidity | 90 % relative humidity (non-condensing) |
| Operating Interface | Soft Touch Keypad |
| Operating Temperature | 0 - +60 °C (32 - 140 °F) |
| ORP Electrode Calibration | Predefined ORP standards (including Zobell's solution) |
| Parameter | pH/Oxydo Reduction Potential (ORP) |
| Conductivity/Total Dissolved Solid (TDS)/Salinity/Resistivity |
| Dissolved Oxygen (DO) |
| Biochemical Oxygen Demand (BOD) |
| Ion Selective Electrode (ISE): Ammonia, Ammonium, Chloride, Fluoride, Nitrate, Sodium |
| PC Data Transfer Software | HQD Series Meter Data Transfer Utility |
| pH Buffer Sets | Color-coded: 4.01, 7.00, 10.01 pH; |
| IUPAC: 1.679, 4.005, 7.000, 10.012, 12.45 pH |
| DIN: 1.09, 4.65, 9.23 pH |
| User-defined custom buffer sets |
| pH Electrode calibration | 1 - 3 Calibration points |
| Calibration summary data logged and displayed |
| pH Measurement Range | 0 - 14 pH |
| pH Resolution | Selectable: |
| 0.001/0.01/0.1 pH |
| Printer | Yes, Optional |
| Probes included | None |
| Resistivity Measurement | 2.5 Ω.cm - 49 MΩ.cm |
| Resistivity Resolution | 0.1 |
| Salinity Measurement Range | 0 - 42 (ppt) (‰) |
| Salinity Resolution | 0.01 (ppt) (‰) |
| Sensor A | NA |
| Sensor B | NA |
| Sensor C | NA |
| Sensors | Sensor A: NA |
| Sensor B: NA |
| Sensor C: NA |
| TDS Measurement Range | 0.00 mg/L - 50.0 g/L as NaCl |
| TDS Resolution | 0.01 mg/L - 0.1 g/L upon measuring range. |
| Temperature Compensation | Automatic Temperature compensation for pH |
| Temperature Measurement | °C or °F |
| Temperature Range | ‘-10°C - 110 °C |
| Temperature Resolution | 0.1 |
| Type of measurement | Lab Water Quality applications. |
| Weight | 750 g (1.65 lb) without batterie; 850 g (1.87 lb) with batteries |
| What's included? | Includes: meter, 4 AA batteries, universal power adapter, USB cable for data transfer, quick start guide and user manual |
