Horiba and COS Jointly Develop Total Nitrogen/Phosphorous Analyzer

25 October 2001


Horiba, Ltd. and its subsidiary specializing in water quality measuring equipment, COS CO., Ltd., have jointly developed a total nitrogen/phosphorous analyzer to be used in controlling the quality of wastewater from factories and sewage treatment plants. The two corporations will begin collecting orders for the equipment on November 1st using their respective sales channels. The new total nitrogen/phosphorous analyzer is easy to use and maintain, and boasts reduced running costs. The two corporations have combined their leading technologies and competitive advantages in everything from product development to sales. In addition, the whole Horiba Group is giving its all in the water quality measurement business, to help those businesses and organizations subject to the coming fifth Japanese regulation regarding the total amount of water pollutants meet the new regulatory requirements. The corporate group is determined to expand and enhance its lineups of water quality measurement products, as well as their sales.


In efforts to prevent the pollution of Tokyo Bay, Ise Bay, Seto Naikai (Inland Sea of Seto), and the other closed seas of the archipelago, Japan adopted a regulation on the total amount of water pollutants contained in sewage in 1979. So far, there have been three amendments to this regulation. Still, we have yet to see disappearance of such water pollution issues as red tide and microcystis. Thus, a further enhanced amendment to the regulation is expected to take effect in 2004. This fifth regulation is supposed to control two new items (the total amounts of nitrogen and phosphorous), in addition to the traditionally controlled item of COD.


One point emphasized in the development of this new product was ease of use in every meaning of the term. The enhanced measuring mechanism has resulted in the significant reduction of consumption of reagent used, to around a tenth of former models. It has also reduced pure water used, to some 50 liters a month compared to some 700 liters for former models. Thus, the new product is easy to maintain and carries a much smaller running cost. In terms of the environmental impact that this product itself has, it consumes about half the electricity that former models consumed and emits only about a fifth of the waste solution. The new product is evidence that the Horiba Group seriously considers the environment in every detail.


The coming amended regulation on the total amount of water pollutants contained in sewage covers some facilities not subject to the former versions of the regulation. These include “Kurhaus” spas, which are spreading all over Japan today, and general hospitals. Many of these facilities have thus far not used automatic measuring equipment for water pollutants. In addition to this rapid expansion of the market for this kind of product, the whole Horiba Group is doing everything it can to promote the sales of this new product. Especially notable is the sales force of COS, Horiba’s subsidiary specializing in water quality measuring equipment, which directly deals with potential customers and has hands-on knowledge of their needs as well as excellent sales know-how. As the fifth regulation requires more facilities to install analyzers of total nitrogen and phosphorous, the corporate group intends to obtain the largest share in the market of such analyzers.




1) Smallest running cost in the industry
The new product features a simplified measuring mechanism and is able to work with less measuring reagent. Compared to former models, this latest model consumes only a tenth or so of the reagent and roughly a fourteenth of the pure water. Furthermore, the new model has fewer replacement parts.

2) Smaller in size than former models
The former models had sewage and pure water tanks installed, in addition to the analyzers themselves. Now, this new model embeds them in its own mounting stool. Also, the latest model has been slimmed down to 80 kg in weight, compared to the 150 kg of the previous model. Needless to say, this saves space for installation. Thanks to this new smaller size, it is possible to install this new nitrogen/phosphorous analyzer and a UV meter that allows the measure COD with ease in a single outdoor installation case. The coming fifth regulation requires measuring of three items: total nitrogen, total phosphorous, and COD (the UV meter). With this new analyzer, it is possible to have all the measuring devices one is expected to have in a single case.

3) Contains mechanism to calculate pollution load
The new analyzer has an embedded mechanism to calculate the pollution load. This mechanism reads the values from the fluid meters and computes the pollution loads of the total nitrogen and phosphorous as the new regulation requires.

Suggested price) 5,000,000yen

Commencement of order collection) November 1, 2001

Targeted numbers of units sold (Horiba and COS combined)
First year: 100 2002: 400

Major specifications)
Ranges measurable: (Range definable within the extents below)
(Total nitrogen) Minimum range: 0-2 mg/liter; Maximum range: 0-1000 mg/liter
(Total phosphorous) Minimum range: 0-0.5 mg/liter; Maximum range: 0-250 mg/liter
Measuring time: 60 minutes
External dimensions: 460 (W) × 380 (D) × 1500 (H) mm
Weight: Approximately 80 kg