Auto-buffer recognition:
                                            
                                            
                                        
									    Yes
                                    
                                
    						
								
                                    
                                        
                                            
                                                Backlight:
                                            
                                            
                                        
									    Included
                                    
                                
    						
								
                                    
                                        
                                            
                                                Barometric pressure measurement:
                                            
                                            
                                        
									    Automatic compensation of DO when using an LDO or LBOD probe
                                    
                                
    						
								
                                    
                                        
                                            
                                                Calibration intervals/alerts/reminder:
                                            
                                            
                                        
									    Off, selectable from 2 hours to 7 days
                                    
                                
    						
								
                                    
                                        
                                            
                                                Casing IP rating:
                                            
                                            
                                        
									    IP54 (Resistant to spray of water; Dust-proof)
                                    
                                
    						
								
                                    
                                        
                                            
                                                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 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
                                    
                                
    						
								
                                    
                                        
                                            
                                                Conductivity measurement: Temperature correction:
                                            
                                            
                                        
									    None; Linear; NaCl Non-Linear Natural Water.
                                    
                                
    						
								
                                    
                                        
                                            
                                                Conductivity measurement at stable reading:
                                            
                                            
                                        
									    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) stand
                                    
                                
    						
								
                                    
                                        
                                            
                                                Custom calibration standards:
                                            
                                            
                                        
									    Yes
                                    
                                
    						
								
                                    
                                        
                                            
                                                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 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:
                                            
                                            
                                        
									    Included
                                    
                                
    						
								
                                    
                                        
                                            
                                                Environmental conditions: relative humidity:
                                            
                                            
                                        
									    90 % relative humidity (non-condensing)
                                    
                                
    						
								
                                    
                                        
                                            
                                                Environmental conditions: temperature:
                                            
                                            
                                        
									    0 - 60 °C
                                    
                                
    						
								
                                    
                                        
                                            
                                                GLP features:
                                            
                                            
                                        
									    Date; Time; Sample ID; Operator ID
                                    
                                
    						
								
                                    
                                        
                                            
                                                Instrument:
                                            
                                            
                                        
									    Bench
                                    
                                
    						
								
                                    
                                        
                                            
                                                ISE direct measurement:
                                            
                                            
                                        
									    Yes
                                    
                                
    						
								
                                    
                                        
                                            
                                                ISE electrode calibration:
                                            
                                            
                                        
									    2 - 5 points
                                    
                                
    						
								
                                    
                                        
                                            
                                                Kit?:
                                            
                                            
                                        
									    No
                                    
                                
    						
								
                                    
                                        
                                            
                                                Languages user interface:
                                            
                                            
                                        
									    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:
                                            
                                            
                                        
									    -1500 - 1500 mV
                                    
                                
    						
								
                                    
                                        
                                            
                                                mV resolution:
                                            
                                            
                                        
									    0.1 mV
                                    
                                
    						
								
                                    
                                        
                                            
                                                Operating error messages:
                                            
                                            
                                        
									    Clear text error messages displayed
                                    
                                
    						
								
                                    
                                        
                                            
                                                Operating Interface:
                                            
                                            
                                        
									    Soft Touch Keypad
                                    
                                
    						
								
                                    
                                        
                                            
                                                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:
                                            
                                            
                                        
									    Colour-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
                                    
                                
    						
								
                                    
                                        
                                            
                                                Resolution:
                                            
                                            
                                        
									    0.01 mg/L - 0.1 g/L upon measuring range.
                                    
                                
                                    
                                        
                                            
                                            
                                                 
                                            
                                        
									    0.1
                                    
                                
    						
								
                                    
                                        
                                            
                                                Salinity measurement range:
                                            
                                            
                                        
									    0 - 42 (ppt) (‰)
                                    
                                
    						
								
                                    
                                        
                                            
                                                Salinity resolution:
                                            
                                            
                                        
									    0.01 (ppt) (‰)
                                    
                                
    						
								
                                    
                                        
                                            
                                                Sensor:
                                            
                                            
                                        
									    NA
                                    
                                
                                    
                                        
                                            
                                            
                                                 
                                            
                                        
									    NA
                                    
                                
    						
								
                                    
                                        
                                            
                                                Sensor C:
                                            
                                            
                                        
									    NA
                                    
                                
    						
								
                                    
                                        
                                            
                                                TDS measurement range:
                                            
                                            
                                        
									    0.00 mg/L - 50.0 g/L as NaCl
                                    
                                
    						
								
                                    
                                        
                                            
                                                Temperature compensation:
                                            
                                            
                                        
									    Automatic Temperature compensation for pH
                                    
                                
    						
								
                                    
                                        
                                            
                                                Temperature measurement range:
                                            
                                            
                                        
									    °C or °F
                                    
                                
    						
								
                                    
                                        
                                            
                                                Temperature range:
                                            
                                            
                                        
									    -10 °C - 110 °C
                                    
                                
    						
								
                                    
                                        
                                            
                                                Temperature resolution:
                                            
                                            
                                        
									    0.1 °C
                                    
                                
    						
								
                                    
                                        
                                            
                                                Warranty:
                                            
                                            
                                        
									    36 months
                                    
                                
    						
								
                                    
                                        
                                            
                                                Weight:
                                            
                                            
                                        
									    750 g without batteries; 850 g with batteries
                                    
                                
    						
								
                                    
                                        
                                            
                                                What's included?:
                                            
                                            
                                        
									    HQ430D Laboratory Single Input, Multi-Parameter Meter - pH, Conductivity, Optical Dissolved Oxygen, ORP, and ISE. With electrode stand, 4 AA batteries, universal power adapter + cable, USB cable for data transfer, user manual. Without electrodes.