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Recurring Orders 
HQD Laboratory Meters
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Take the guesswork out of measurements with Hach HQD laboratory meters. All HQD meters feature an advanced yet simple user interface that does not require manuals or training to operate.
Measurement data can be stored and transferred to a printer, PC or USB storage device
About HQD and Intellical Probes
HQD meters connect with digital Intellical probes and automatically recognise the testing parameter, calibration history and method settings to minimise errors and setup time.
Intellical Red Rod pH electrodes offer exceptional performance and response time across a wide variety of sample types. The LBOD probe utilises optical technology to provide fast, accurate Dissolved Oxygen (DO) measurements while dramatically reducing maintenance costs.
Additional probes for Conductivity, Total Dissolved Solids (TDS), Ammonia, Ammonium, Fluoride, Nitrate, Sodium, and RedOx (ORP) measurements complete the Intellical portfolio.
HQD Series Meters are Available in Three Models:
• HQ411D - pH/mV/ORP (RedOx)
• HQ430D - Multi-parameter, single probe input
• HQ440D - Multi-parameter, dual probe inputs
Key Features Common to All Models:
• Designed for drinking water and wastewater professionals.
• Automatic probe and parameter recognition.
• Instrument guided calibration procedures.
• Calibration data stored in the probe.
• Probe specific method settings for regulatory compliance and Good Laboratory Practice (GLP).
• Real-time data logging with a USB connection.
• Bi-directional communication with PC-based systems with a virtual serial port connection.
• Sample ID and Operator ID for data traceability.
• Adjustable automatic shut-off.
• Durable, robust design to withstand years of use.
Measurement data can be stored and transferred to a printer, PC or USB storage device
About HQD and Intellical Probes
HQD meters connect with digital Intellical probes and automatically recognise the testing parameter, calibration history and method settings to minimise errors and setup time.
Intellical Red Rod pH electrodes offer exceptional performance and response time across a wide variety of sample types. The LBOD probe utilises optical technology to provide fast, accurate Dissolved Oxygen (DO) measurements while dramatically reducing maintenance costs.
Additional probes for Conductivity, Total Dissolved Solids (TDS), Ammonia, Ammonium, Fluoride, Nitrate, Sodium, and RedOx (ORP) measurements complete the Intellical portfolio.
HQD Series Meters are Available in Three Models:
• HQ411D - pH/mV/ORP (RedOx)
• HQ430D - Multi-parameter, single probe input
• HQ440D - Multi-parameter, dual probe inputs
Key Features Common to All Models:
• Designed for drinking water and wastewater professionals.
• Automatic probe and parameter recognition.
• Instrument guided calibration procedures.
• Calibration data stored in the probe.
• Probe specific method settings for regulatory compliance and Good Laboratory Practice (GLP).
• Real-time data logging with a USB connection.
• Bi-directional communication with PC-based systems with a virtual serial port connection.
• Sample ID and Operator ID for data traceability.
• Adjustable automatic shut-off.
• Durable, robust design to withstand years of use.
Required Accessories | View all
Intellical PHC281 Water Quality Laboratory Refillable pH Electrode, 1 m Cable
Product #: PHC28101
Unit Price Contact Hach
Intellical PHC201 Laboratory General Purposes Gel Filled pH Electrode, 1 m Cable
Product #: PHC20101
Unit Price Contact Hach
Intellical CDC401 Laboratory 4-Poles Graphite Conductivity Cell, 1 m Cable
Product #: CDC40101
Unit Price Contact Hach
Intellical PHC301 Laboratory General Purposes Refillable pH Electrode, 1 m Cable
Product #: PHC30101
Unit Price Contact Hach
Intellical LDO101 Laboratory Luminescent/Optical Dissolved Oxygen (DO) Sensor, 1 m Cable
Product #: LDO10101
Unit Price Contact Hach
Intellical LBOD101 Luminescent/Optical Dissolved Oxygen (LDO) Sensor for BOD Measurements, 1 m Cable
Product #: LBOD10101
Unit Price Contact Hach
Intellical MTC101 Laboratory Low Maintenance Gel Filled ORP/RedOx Electrode, 1 m Cable
Product #: MTC10101
Unit Price Contact Hach
Intellical PHC735 Laboratory Dirty Media RedRod Refillable Glass pH Electrode, 1 m Cable
Product #: PHC73501
Unit Price Contact Hach
Intellical PHC805 Laboratory General Purpose Refillable Glass pH Electrode, 1 m Cable
Product #: PHC80501
Unit Price Contact Hach
Intellical ISENH3181 Ammonia (NH₃) Ion Selective Electrode (ISE), 1 m cable
Product #: ISENH318101
Unit Price Contact Hach
Intellical ISEF121 Fluoride (F⁻) Ion Selective Electrode (ISE), 1 m cable
Product #: ISEF12101
Unit Price Contact Hach