The HQD HQ440D is a benchtop dual-input multi-parameter meter built for water quality labs that need flexibility without extra complexity. It connects to any two HACH IntelliCAL smart probes at once, automatically recognizing each probe’s parameter, calibration history, and method settings.

• Two input channels: pH, Conductivity, TDS, Optical Dissolved Oxygen (DO), BOD, ORP/RedOx, temperature, and ISE direct-concentration readings (ammonia, ammonium, fluoride, chloride, sodium)
• Guided calibration and check-standard routines with stabilization alerts and measurement lock
• IntelliCAL smart probes store their own calibration data, so swapping probes never requires re-calibration
• Automatic GLP-traceable data logging: serial numbers, calibration data, user ID, sample ID, time, and date
• Internal USB ports for data transfer, printers, keyboards, and software updates
• Large ultra-bright backlit LCD screen for easy reading in any lab environment

Brand: HACH
Product Number: HQ440D