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Whether you want to check the carbon content of waste water or keep an eye on the salt content of your process water, when it comes to water analysis, HACH LANGE is the perfect choice. We have years of experience in water analysis and offer a broad range of services.Our company history dates back to Berlin 1933, when Dr. Bruno Lange set up a company in his own name employing six people. Inventions such as the photometer and later on cuvette tests have revolutionised the field of analysis, making it possible to conduct extensive analyses without the need for in-depth knowledge of chemistry.HACH LANGE was born in 2004 when Dr. Bruno Lange joined forces with HACH, an American company specialising in electro and photochemistry. The expertise of these two companies is now combined, benefitting you, our customers!That's not all, our company is continuing to grow and already has 22 subsidiaries around the world, including branches across Europe, China and the USA.


Miss Sarah Blayds
Laser House,

Ground Floor,Suite B
Waterfront Quay, Salford Quays
M50 3XW

New sensor ideal for ultrapure water applications

THE Orbisphere 1100 series optical dissolved oxygen sensor from HACH LANGE is providing major advantages to international service company Serco, in the course of its work to solve corrosion problems within the UK power generation sector.

The instrumentation has helped reduce maintenance time and service requirements to improve the overall monitoring efficiency of testing carried out under plant conditions.

The sensor is used to monitor feedwater for the determination of dissolved oxygen levels in ultra pure water, in this instance, primary coolant in pressurised water reactors.

Dissolved oxygen is vitally important in applications ranging from power generation, wastewater, drinking water and beverage production to monitor and control corrosion rates of materials.

Employing luminescent measurement technology, with no membranes or electrolyte, the solid state sensor head of the Orbisphere 1100 is unaffected by process changes or pressure shocks and requires minimal user intervention. It is quick and easy to calibrate, saving on maintenance costs as a result. Annual maintenance is limited to just a few minutes for a zero point calibration. In addition, chemicals are not required for this process, making the task easier and safer without reducing measurement precision.

A further useful feature of the luminescent measurement technology is the elimination of effects on readings by other dissolved gases such as carbon dioxide and hydrogen.

The Serco Technical and Assurance Services laboratory team provides a dedicated service to industry, solving corrosion related plant problems. Its research laboratories enable the simulation of most plant conditions found within the power generation market. The majority of the work performed is for regulatory purposes and for plant lifetime/safety studies, so it is vitally important that fast, accurate and reliable results are produced during corrosion experiments that replicate plant conditions.

In order to tailor analytical services to customer needs, the laboratories employ a sophisticated range of the latest laboratory instruments.

Chris Auener, Structural Integrity Analyst at Serco, said: "The sub 10ppb accuracy of the system within the calibration range of the Orbisphere 1100 from HACH LANGE reduces the inaccuracy of the measurement allowing previously unseen readings within primary water conditions at Serco.

"We have numerous requirements from industry to recreate plant conditions with high purity water containing high concentrations of other dissolved gases and pH raisers and so the Orbisphere 1100 has proved ideal for our purposes. The instrument is also extremely user-friendly and meets the industry standard."

Another benefit of the Orbisphere 1100 is that the sensor will fit into any existing Orbisphere sensor housings, allowing quick and reliable monitoring, even at sub 5ppb levels making the instrument ideal for all power applications. The sensor is then connected to the Orbisphere 510 - Multi Channel O2, O3, CO2, N2 and H2 Gas Analyser and Orbisphere 410 - Oxygen and Ozone Gas Analyser.

Summarising, Gareth Hughes, Industrial Process Sales Manager at HACH LANGE said: "The key feature of the Orbisphere 1100, that sets it apart from other instruments, is its ability to provide highly accurate ultra-low DO measurements with little or no service requirement, saving valuable time and costs in the process."

For further information please email HACH LANGE LTD

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