When was your last calibration?
You measure pH frequently—perhaps
several times daily.
You are aware that
the pH says a lot about the quality of
a sample, and the processes for which
you are responsible. Especially in the
treatment of wastewater and drinking
water, conductivity and oxygen play a
key role in many applications.
in the field or in the laboratory, you have
to be able to rely on the readings of
at all times.
Have confidence in your pH,
conductivity and oxygen readings!
High Quality Digital—HQD means complete,
coordinated, stable meters with
practical accessories and intelligent electrodes.
What makes HQD special is the
newly developed INTELLICAL electrodes,
which store all relevant characteristic
parameters in digital form.
this means they measure pH, conductivity
and oxygen correctly—more reliable,
flexible and simple than ever before.
You prefer plain language? HQD too!
HQD communicates clearly—this was a
priority for HACH LANGE. Clear, legible
text on the illuminated display.
menu structure is easily user friendly
and ensures smooth, error-free handling.
From one-touch measurements to the
programming of complex tasks, you will
appreciate the plain language of HQD!
Calibration? HQD reminds you!
Reliable pH readings are now very
simple. You set the interval between
calibrations to suit your own situation.
HQD reminds you when recalibration
is due. Furthermore, you can also
define the calibration quality by entering
requirements with regard to the slope.
Our pH and conductivity electrodes have
already passed their baptism of fire!
Our INTELLICAL electrodes are the proud result of
more than 50 years of glass blowing craftsmanship.
In cold drinking water, heavily polluted
wastewater or low-ion process water—you
benefit from their minimum response times,
maximum calibration stability and long service
Naturally, this also applies to the outdoor
electrodes made of stainless steel, which remain
intact even under the most trying conditions.
Cables of up to 30 m in length enable digital
data transmission from previously inaccessible
measurement locations, e.g. lakes, boreholes
and bridges—even for pH.
Why calibrate, when you could be taking
Forget it—calibrating O2 electrodes is history!
Today there is LDO—the dissolved oxygen sensor
without drift, without electrolyte, without membrane
The new measurement principle (LDO
stands for Luminescent Dissolved Oxygen) has
revolutionised oxygen measurement.
frequent calibration and electrolyte replacement,
you simply change the sensor cap once each
year. Using LDO saves time and money—from the
very first day, in every application.
Digital INTELLICAL electrodes are recognised automatically - Outstanding reliability and simple handling
Digital INTELLICAL electrodes and meters are geared to each other
and are interchangeable (Mix + Match principle) - Flexible and efficient,
Ideal for use with varying applications - The calibration data is stored in the INTELLICAL electrodes, and the control
intervals can be programmed to enable application.
Specific status checks - Correct results in the shortest time possible
Stable, ready-to-use INTELLICAL oxygen sensor with luminescence
(LDO) technology - Reliable O2 results.without calibration or replacing the electrolyte
All INTELLICAL electrodes with integrated temperature sensor - Time-saving automatic temperature compensation
More than 50 years of experience in developing and making electrodes
and instruments for use in the field and in the laboratory - Competent support through innovative technology
and comprehensive applications know-how
Large illuminated graphic display. Results and operating instructions
in plain English - Immediately understandable and easy to read, even in difficult light
One-touch measurement and user programming through intuitively
understandable menus - Optimal handling for every user
Automatic measurement with the progress of the stabilisation of the reading
shown on the display. User-defined measurement interval (data logger) - Reliable, error-free measurement in all conditions
Freely selectable calibration interval, slope tolerances and standard
control solution - Reliable readings at all times
USB, PC, printer and keyboard connections, with all read and write functions - Complete GLP-compliant communication and documentation,
also via LIMS
All the necessary information about each reading is automatically saved - Full GLP data management
Password-protected programmes and settings - Accidental changes to settings are excluded; outstanding
Digital INTELLICAL electrodes with maximum calibration stability, service life
and minimum response times - Reliable, high-precision, high-accuracy readings
pH and conductivity electrodes in various designs for use in the laboratory
and in the field - Versatile electrodes for all applications, e.g. wastewater,
drinking water, process water
HQD meters, rugged and waterproof (IP 67), mains and battery operated,
power-economy mode, large memory for 500 readings - Ideal for portable use
Rugged outdoor electrodes with cables up to 30 m long without interferences thanks to digital technology - Reliable results from inaccessible measurement locations
and over long distances - even for pH
Drift-free LDO sensor - No calibration, no polarisation
Luminescence-based LDO technology - No replacement of electrolyte, no interference by deposits or H2S
INTELLICAL LDO technology with an automatic reminder to change the sensor cap
each year - Error-free results with minimum effort
Flow-free sensor without O2 consumption - Precise and accurate measurements at high and low O2 concentrations