• Sign Up or Sign In



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

EA Awards COD Contract to HACH LANGE

Following a thorough evaluation project, the Environment Agency has awarded HACH LANGE a framework agreement to supply wastewater analysis (COD) test reagents and associated services for a period of four years.

Commenting on the award, Robert Rand, Team Leader at The National Laboratory Service says "The NLS provides an analytical service to the Environment Agency which requires consistently high standards of accuracy. HACH LANGE was selected, based on our assessment of analytical performance, price, quality, and environmental impact."

Laboratory Sales Manager for HACH LANGE Mathew Dillon expressed his delight with the award, adding "We now supply the EA and ten of the main eleven Water Companies with COD tubes and associated instruments. The quality and reliability of our DR2800 spectrophotometer, heating block and COD reagents mean that customers can rely on the correct reading every time. The test is extremely simple to perform and it incorporates several unique features designed to substantially eliminate human error."

COD stands for Chemical Oxygen Demand. It is a measure of organic pollution in wastewater, and is the most frequently mentioned parameter in European legislation. The Hach COD test follows the ISO 15705 standard method exactly, with all reagents supplied ready-to-use, in precisely the correct amounts in a small cuvette.

To perform a test, users simply add a water sample to a cuvette and leave it in a heater for 2 hours. At the end of this period the intensity of colour in the solution is directly related to the COD value in the sample, and can be measured quickly and easily.

HACH LANGE claims that its COD analytical instrumentation and associated reagents almost completely dominate the UK market and feedback from some of the company's major customers is given below.

Bob Capron from United Utilities (Wastewater Manager) says "The laboratory at United Utilities has recently, after carrying out extensive trials involving all major COD suppliers, awarded HACH LANGE a three year contract to supply 120,000 COD tubes per year. The contract has been running since October 2004 and during this time the service in terms of quality, reliability, delivery and removal of used tubes has been excellent. HACH LANGE staff involved in the contract have been extremely helpful at all times."

Mark Boldy from Anglian Water (Chemistry Manager) adds "The Anglian Water Services laboratories have used the Lange COD tubes and spectrophotometers for the last eight years. The main reasons for initial and continued use are the reliability and reproducibility of the product, enabling Anglian Water to meet the requirements of our regulators and customers with respect to COD analysis. HACH LANGE takes responsibility for the safe disposal/recycling of the used tubes and we have been very pleased with the level of service."

In addition, Graham Coe from Thames Water (Laboratory Manager) says "Thames Water has used the COD test system from HACH LANGE for the past 9 years, during this time we have found it both reliable, reproducible and cost effective for the analysis of COD within waste waters and trade effluents. It passed our validation criteria and the Urban Wastewater Directive and has been audited by both the EA and UKAS. We have not encountered any problems with either deliveries or the removal of spent tubes or the HACH LANGE calibration and repair service."

For further information please email HACH LANGE LTD

© Faversham House Group Ltd 2020. WWT and WET News news articles may be copied or forwarded for individual use only. No other reproduction or distribution is permitted without prior written consent.

Cookie Policy   |   Privacy Policy