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With PHC281 pH Electrode for Waters and ISEF121 Ion Selective Electrodes.
Designed for water quality experts, the Hach HQ440D Laboratory Multi-Meter is an advanced laboratory meter that takes the guesswork out of measurements. HQD meters connect with smart IntelliCALⓇ electrodes that automatically recognize the testing parameter, calibration history, and method settings to minimize errors and setup time. The advanced HQD Laboratory Meter is designed to withstand years of continuous lab use. HQD meters feature a simple user interface that does not require manuals or training to operate. The IntelliCAL PHC281 is a standard combination pH electrode, robust plastic body, refillable with built-in temperature sensor and 1 m cable. PHC281 is intended for laboratory use and specially designed for fast response and stabilisation to measure pH in general purpose water quality applications or in difficult samples such as low ionic strength (LIS), ultrapure, dirty, TRIS, or high-solid content samples. The IntelliCAL ISEF121 is a digital, combination fluoride ion selective electrode (ISE) with a non-refillable, single junction reference and built-in temperature sensor. The ISEF121 electrode is intended for laboratory use. The ISEF121 is ideal for measuring fluoride concentrations in drinking water, wastewater, and general water quality applications. The ISEF121’s solid-state sensor design eliminates membrane replacement and allows for dry storage of the ISE
| Automatic Buffer Recognition | 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 + Probe(s) + Lab. Accessories + Reagents |
| 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 Holder | NA |
| Electrode stand | Included |
| GLP Features | Date; Time; Sample ID; Operator ID |
| Instrument | Benchtop |
| IP Rating | IP54 (Resistant to spray of water; Dust-proof) |
| ISE Direct Measurement Range | Yes |
| ISE Electrode Calibration | 2 – 5 points |
| Kit? | Yes |
| 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 | HQ440D – Multi/2 Channels |
| mV Measurement at Stable Reading | Yes |
| mV Measurement Range | -1500 – 1500 |
| mV Resolution | 0.1 mV |
| Needed Cable Length | 1 |
| 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 | ISEF12101, PHC28101 |
| 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 | ISEF12101 |
| Sensor | PHC28101 |
| Sensor C | NA |
| Sensors | Sensor A: ISEF12101 Sensor B: PHC28101 Sensor C: NA |
| Simultaneous measurements | Yes |
| 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. |
| Warranty | 36 months |
| Weight | 750 g (1.65 lb) without batterie; 850 g (1.87 lb) with batteries |
| What’s included? | Meter package includes HQ440D Laboratory Multi Meter, Universal electrode Stand with electrode holder, ISEF121 Fluoride Ion Selective Electrode with 1 m cable, Fluoride standard solutions (500 mL): 0,5 mg/L, 1 mg/L, 10 mg/L. Fluoride ISAB powder pillows pack (100 pcs). PHC281 pH Ultra Refillable pH Electrode with 1 m cable, pH Buffer Kit 4,01/7,00/10,01 (500 mL), pH electrode storage solution (500 mL), 4 Alkaline 1,5V AA batteries, Power Supply Adapter, Power Cord, USB cable for data transfer, and Operating Documentation. |
