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: Temperature correction:
None; Linear; NaCl Non-Linear Natural Water.
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
Display:
Detailed mode/Large mode
Display Lock Function:
Continuous / Auto-stabilization ("press to read") / At Interval
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:
Bench
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
Measurement method:
Probe specific programmed method settings
Model:
HQ440D – Multi/2 Channels
mV Measurement at Stable Reading:
Yes
mV Measurement Range:
-1500 - 1500 mV
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:
PHC72901
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:
PHC72901
Sensor B:
NA
Sensor C:
NA
Sensors:
Sensor A: PHC72901
Sensor B: NA
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 Surface Measurements
Warranty:
36 months
Weight:
750 g (1.65 lb) without batterie; 850 g (1.87 lb) with batteries
What's included?:
Includes: HQ440d benchtop meter, PHC729 Red Rod surface pH probe with 1-m cable, probe stand, pH 4.01 buffer (red, 500 mL), pH 7.00 buffer (yellow, 500 mL), pH 10.01 buffer (blue, 500 mL), pH storage solution (500 mL), and pH electrode cleaning solution (500 mL).