H2O Lab-News

pH - Get it right the first time

Everybody measures it and most think it's simple, yet pH can be a difficult parameter to measure correctly. Your control parameter may be completely incorrect due to air bubbles, low electrolyte solution, electrolyte leakage, or contamination. Process issues then follow and lack of confidence in the pH probe, leading to premature replacement of electrodes.

There are solutions, however, that help you overcome these issues easily.
Read on to find out how to get the right results and avoid unnecessary spending!

How to enhance electrode lifetime and get trustworthy results:

  • Condition new electrodes before first use.
  • Check refillable electrodes for sufficient level of electrolyte in the shaft. Refill up to 3mm from refill hole.
  • Open refill hole before the first measurement and always close when you are done for the day.
  • Always store electrodes in proper storage solution as mentioned in electrode documentation.
  • Keep the diaphragm clean and safe from drying out.
  • Keep the glas bulb clean and eliminate air bubbles before measuring.
  • Use proper cleaning solutions to cleanse your electrode.

Did you know? Measuring in hot solutions reduces your electrode's lifetime by half.

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Application literature to support you in your daily work

HACH LANGE solutions deliver a perfectly coordinated system - in lab and process analysis

HQD portable and benchtop meters with digital INTELLICAL electrodes

Easy to use – no matter where you use them

HQD’s user-friendly meters even allow new operators to produce accurate measurements while reducing possible errors, saving you time and hassle. Additionally, the durable design is built to handle the toughest conditions, in both the field and the lab.

  • Automatically detect the testing parameter and calibration history
  • Large graphic display makes the results easy to read, even in difficult light conditions
  • Mix and match of electrodes and meters ensures reliability and flexibility
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Smart digital INTELLICAL probes

INTELLICAL digital probes provide ultimate traceability of calibration history. The probes can be moved between meters without the need to recalibrate or re-enter measurement settings.

  • Minimise errors
  • Minimise setup time
  • Wide range of pH electrodes for a wide range of applications
  • Outdoor electrodes in rugged, waterproof (IP67) design
  • Cable lengths up to 30m - even for pH

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SENSION+ meters and probes

Each portable and benchtop kit comes complete with everything you need to start testing.
  • SENSION+ Field Kits work as complete mobile measurement stations, which include a meter, probe, robust carrying case and all supporting chemistries.
  • Portable instruments offer one-handed operation with ergonomic and lightweight design and IP67 protection. Screw-on calibration tubes simplify on-site calibration and minimise buffer consumption.

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pH buffer solutions

Choose from a wide range of:
  • Certified IUPAC pH standard solutions, supplied in airtight sealed can, guaranteed shelf life, with DKD certificate, and traceable to standard reference materials with given tolerances
  • Quality ready-to-use buffer solutions in bottles, with and without colour coding
  • SINGLET buffer solutions, in individually sealed airtight pouches, colour coded

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 Online sensors for continuous monitoring of your water quality 

pHD-S sc: Digital differential probe for pH value or redox potential with salt bridge
  • Particularly long service life due to protected reference system, separated from the measurement medium
  • Less cleaning and calibration required
  • Can be connected to any SC controller.


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Select your bundle and upgrade now!

HQ440D Dual Channel Lab Digital Multi-Meter

The digital meter/electrode system HQD combines reliability, flexibility and ease of use. Interchangeable INTELLICAL electrodes are recognised automatically and store all relevant data.
  • Plug-and-Play with any two INTELLICAL electrodes!
  • Optimised handling
  • User friendly
  • Fully GLP compliant communication and documentation

Buy now and get an electrode holder (for two INTELLICAL electrodes) FOR FREE!


Request a quote now!


Portable SENSION+ pH Meter Field Kit

An all in one system with guided menu navigation makes general electrochemistry testing fast and simple. Each system is designed to be used in a wide variety of applications and comes complete with everything you need to start testing.
  • Ergonomic design for one-handed operation
  • Calibration tubes minimise standard consumption.
  • Precise and cost-efficient system.

Buy now and upgrade to the advanced data logger field kit with interval measurements and wireless data transfer FOR FREE!

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Orders must be placed by April 30th 2014. Offer Code H1412L must be mentioned at time of purchase. Not to be combined with any other offers or discounts.