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Launch of the TOC-210 Series of Water Quality Analyzers
~Improved measurement functions and maintainability~

December 18, 2024

Toray Engineering Co., Ltd.

TOC-210 Series
TOC-210 Series

Toray Engineering D Solutions Co., Ltd. (Head Office: Chuo-ku, Tokyo; President & CEO: Ichiro Fukui; hereinafter “Toray Engineering D”) has completed development of the TOC-210 series of total organic carbon automatic analysis devices (hereinafter “TOC automatic analyzers”), and will commence sales in December. The TOC-210 series features improved measurement functions and maintainability over the TOC-200 series and, like its predecessor, is designed to analyze the TOC contained in rivers, lakes and marshes, marine areas, and plant wastewater.
As environmental regulations grow more rigorous, an increasing number of plants are expanding the scope of their TOC monitoring to include waters with low concentrations, which has spurred rising demand for high-precision TOC automatic analyzers. Designed primarily for use in plant wastewater management, the TOC-210 series of devices will be sold globally, with target sales of 1 billion yen by fiscal 2025, and 1.5 billion yen by fiscal 2030.

TOC automatic analyzers measure TOC by combusting and oxidizing samples during water quality analysis. Toray Engineering D’s TOC automatic analyzers utilize a proprietary “low temperature sealed combustion system,” which enables samples to be combusted at an industry-leading low temperature of 650˚C. This helps mitigate deterioration of both the combustion chamber and the catalyst, therefore requiring maintenance to be carried out less frequently. In addition, since the system limits the impact of mists and fumes generated during combustion, only one pre-processing filter is required to prevent contamination of the sensor; this, in turn, helps control operational costs.
The new TOC-210 series was developed to meet demand for TOC automatic analyzers capable of measuring TOC low to high concentrations, and the need for improved maintainability. Previously, measuring low concentrations of TOC was problematic. Low-concentration sample sizes had to be between 3 and 5 times larger than their higher-concentration counterparts, and injected into the analyzers in several installments. The larger sample sizes resulted in the early deterioration of the catalysts inside the measuring device, meaning the catalysts had to be replaced with greater frequency.
The TOC-210 series of automatic analyzers can be equipped with optional highly sensitive NDIR sensors*1, which are capable of measuring TOC concentrations in the low-concentration range of 0-100 milligrams per liter (10 milligrams per liter) in sample sizes of just 30 microliters (approximately one drop of liquid). This is roughly one-fifth the sample size required by previous devices, and is particularly beneficial for measuring samples of sea water, samples containing calcium, and other samples that lead to the rapid deterioration of catalysts. The TOC-210 series also features a revised construction that makes it easier to access and replace sample sets, catalysts, and consumable parts. While consumables were previously located in hard-to-reach areas inside the device, thanks to the application of proprietary design technologies, the parts that require more frequent maintenance are now all situated behind a door at the front of the device.

Toray Engineering D has developed a diverse line-up of water quality analyzers capable of measuring TOC, total phosphorous, and total nitrogen at various measurement points—these range from sources of water pollutants with high TOC concentrations to discharge water and rainwater with low TOC concentrations. Drawing on more than 50 years of experience and technological knowhow, the company builds devices that are economical, easy to operate, and compact, with an ever-improving set of functions. In the field of TOC automatic analyzers, in particular, it now boasts the No.1 share of the Japanese market.
Toray Engineering D utilizes Device, Digital, and Design technologies to provide its customers with optimal solutions. Going forward, it intends to create new solutions through the development and maintenance of equipment and software systems.

Details of the TOC-210 series are outlined below:

1. Product name TOC-210 series of water quality analyzers
Total organic carbon automatic analysis devices
2. Key characteristics
  • Highly sensitive NDIR sensors available as an option for more stable measurements in low-concentration ranges
  • Revised design enables quick and easy replacement of parts for improved maintainability
  • DX options available to understand and manage operational states, replacement periods, and failure state for various parts
3. Use Upstream monitoring; process monitoring; discharge monitoring; semiconductor plants

*1 An NDIR, or “non-dispersive infrared,” sensor operates on the principle that different gases absorb different wavelengths of infrared light. The sensor measures how much of which wavelengths of light is absorbed when infrared light is passed through a gas sample; the concentration of different gases in a sample can then be calculated.