| Temperature correction | None; Linear; NaCl Non-Linear Natural Water. |
| Accessories Included | USB charger, power cable, and clips |
| 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 |
| Certifications | CE, FCC, ISED, RCM, KC |
| ETL Verified | US DOE/ NRCan Energy Efficiency, RoHS |
| Conductivity Measurement Range | Yes |
| Custom Calibration Standards | Yes |
| Data Export | USB connection to PC or USB storage device (limited to the storage device capacity). |
| Data Memory | 100,000 data points |
| Data Storage | Automatic in Press to Read Mode and Interval Mode. Manual in Continuous Read Mode. |
| Dimensions (H x W x D) | 63 mm x 97 mm x 220 mm |
| Display | Up to 3 parameters at a time, dependent on HQ model |
| Display Type | 640x480 Color TFT |
| DO Measurement Range | 0.1 - 20.0 mg/L (ppm), 1 - 200% saturation |
| DO Resolution | 0.1 |
| Enclosure Rating | IP67 (with battery compartment installed) |
| GLP Features | Date; Time; Sample ID; Operator ID, Calibration |
| Inputs | 1 |
| Instrument | Portable |
| ISE Direct Measurement Range | Yes |
| ISE Electrode Calibration | Yes |
| Kit? | Meter only |
| Languages | English, Chinese - Simplified, Spanish, French, German, Italian, Japanese, Turkish, Dutch, Portuguese (PT & BR), Korean, Danish, Swedish, Polish, Norwegian, Hungarian, Greek, Finnish, Czech, Romanian, Croatian, Bulgarian, Slovak, Lithuanian, Estonian, Slovenian, Russian |
| Lock Function | Continuous / Auto-stabilization ("press to read") / At Interval |
| Measurement Method | Probe specific programmed method settings |
| Model | HQ4100 Multi/ISE/1 Channel |
| mV Measurement at Stable Reading | Yes |
| mV Measurement Range | Yes |
| mV Resolution | 0.1 mV |
| Operating Error Messages | Clear text error messages displayed |
| Operating Humidity | 90% (non-condensing) |
| Operating Interface | Soft Touch Keypad |
| Operating Temperature | 14 - 140 °F (-10 - 60 °C) |
| ORP Electrode Calibration | Predefined ORP standards (including Zobell's solution) |
| Parameter | pH, Conductivity, TDS, Salinity, Dissolved Oxygen (DO), ORP, ISE |
| pH Buffer Sets | Colour-coded: 4.01, 7.00 |
| 10.01 pH; IUPAC | 1.679, 4.005, 7.000, 10.012 |
| 12.45; DIN | 1.09, 4.65, 9.23; 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 |
| Power Supply | Rechargeable lithium-ion battery 18650 (internal); Class II |
| USB power adapter | 100 - 240 VAC, 50/60 Hz input; 5 VDC at 2 A USB power adapter output (external) |
| Probe Type | Intellical Standard Laboratory or Rugged Field |
| Probes included | None |
| Protection Class | IEC Class III (SELV (Separated/Safety Extra-Low Voltage) powered); external |
| Range | 14 - 212 °F (-10 - 100 °C) |
| Salinity Measurement Range | 0 - 42 (ppt) (‰) |
| Salinity Resolution | 0.01 (ppt) (‰) |
| Sensor | None |
| Sensor C | None |
| Storage Conditions | -20 - 60 °C, max. 90% relative humidity (non-condensing) |
| TDS Measurement Range | 0.00 mg/L - 50.0 g/L 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 Resolution | 0.1 °C |
| Type of measurement | Field Measurements |
| Warranty | 36 months |
| Weight | 530 g (Meter only) |
| What's included? | HQ4100 Portable pH/ORP/EC/TDS/DO/ISE Multi-Meter, 1 channel, includes manuals, Li-Ion batteries, USB charger with cable for USA. |