Experts often need to analyze the pollution in rivers, oceans, underground water, and other sources of water to determine the cause of environmental deterioration and potential health hazards. So environmental regulators require a reliable, efficient way to measure potential water pollutants using reference values and measurement methods stipulated by law.
Hamamatsu provides high-sensitivity optical sensors and high-luminance light sources for water quality inspection equipment that detects pollutant components in trace amounts.
Dissolved organic molecules commonly exhibit strong absorption in the ultraviolet (UV) range. This method determines organic pollutants present in industrial drainage and river water by measuring the pollutants’ absorbance of UV light.
One approach to nitrogen measurement is converting dissolved nitrogen into nitrates. UV absorption spectroscopy (commonly at 220 nm) is a powerful technique for measuring these nitrates.
Measuring dissolved phosphorus can be challenging. One common technique is treating the sample through chemical reactions to produce molybdenum blue. Absorption measurements around 880 nm can be correlated to the concentration of phosphorus.
Oil content and polycyclic aromatic hydrocarbon (PAH) are measured by irradiating ultraviolet light on factory and vessel drainage and measuring the generated fluorescence.
Atoms absorb specific wavelengths of light, and the absorbed light is reemitted in the form of fluorescent light. Atomic fluorescence spectrometry is an analysis method that detects this fluorescent light and determines the element. It can measure elements such as mercury with high sensitivity at the parts per trillion (ppt) level.
This analysis method determines the quantity of atoms by irradiating a specific wavelength of light on the sample atomized through thermal dissociation and measuring the absorption spectrum. Because this method is less susceptible to spectral interference, it is used to analyze elements (present as the main or trace components) in various fields.
The C16767MA is a high-sensitivity, ultra-compact (fingertip-sized) spectrometer head. The C16767MA supports the ultraviolet region (190 to 440 nm). This product is suitable for integration into a variety of compact devices.
This is a highly stable lamp module that features high luminance in the ultraviolet region (220/254 nm). It is widely used as a light source for ultraviolet light absorption measurement and fluorescence excitation in place of low-pressure mercury lamps. Because it is compact and driven with a 5 V battery, it can be installed in portable analytical instruments. In addition, a cylindrical OEM type suitable for compact analytical instruments is available.
This is a Si photodiode with a bandpass filter specifically designed for 254 nm light absorption measurement. The sensitivity spectral bandwidth is extremely narrow at 10 nm (typ.), allowing accurate photometry with minimal effects from stray light. In addition, types with a bandpass filter for other wavelengths, such as 220 nm (for nitrogen measurement) and 275 nm (for reference), are available.
This is a TO-5 package type Si photodiode for absorptiometers with sensitivities in the 190 to 1100 nm range.
In addition to this product, a wide lineup is available including TO-8, TO-18, and ceramic packages, as well as types with different spectral response ranges.
This is a CMOS linear image sensor with sensitivity in the 200 to 1000 nm range suitable for absorptiometers. In addition to this product, a wide-ranging product lineup is available for different sensitivities, readout speeds, and other parameters.
This is a back-thinned type CCD area image sensor with sensitivity in the 200 to 1000 nm range suitable for absorptiometers.
In addition to this product, a wide-ranging product lineup is available for different sensitivities, readout speeds, and other parameters.
This is a PMT for atomic fluorometers. It features extremely high sensitivity to ultraviolet light and solar-blind characteristics.
This is a phototube for atomic absorptiometers that can be used for mercury monitoring. It features sensitivity to ultraviolet light and solar-blind characteristics.
It looks like you're in the . If this is not your location, please select the correct region or country below.
You're headed to Hamamatsu Photonics website for GB (English). If you want to view an other country's site, the optimized information will be provided by selecting options below.
In order to use this website comfortably, we use cookies. For cookie details please see our cookie policy.
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in this cookie policy. By closing the cookie warning banner, scrolling the page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.
Hamamatsu uses cookies in order to enhance your experience on our website and ensure that our website functions.
You can visit this page at any time to learn more about cookies, get the most up to date information on how we use cookies and manage your cookie settings. We will not use cookies for any purpose other than the ones stated, but please note that we reserve the right to update our cookies.
For modern websites to work according to visitor’s expectations, they need to collect certain basic information about visitors. To do this, a site will create small text files which are placed on visitor’s devices (computer or mobile) - these files are known as cookies when you access a website. Cookies are used in order to make websites function and work efficiently. Cookies are uniquely assigned to each visitor and can only be read by a web server in the domain that issued the cookie to the visitor. Cookies cannot be used to run programs or deliver viruses to a visitor’s device.
Cookies do various jobs which make the visitor’s experience of the internet much smoother and more interactive. For instance, cookies are used to remember the visitor’s preferences on sites they visit often, to remember language preference and to help navigate between pages more efficiently. Much, though not all, of the data collected is anonymous, though some of it is designed to detect browsing patterns and approximate geographical location to improve the visitor experience.
Certain type of cookies may require the data subject’s consent before storing them on the computer.
This website uses two types of cookies:
This website uses cookies for following purposes:
Cookies help us help you. Through the use of cookies, we learn what is important to our visitors and we develop and enhance website content and functionality to support your experience. Much of our website can be accessed if cookies are disabled, however certain website functions may not work. And, we believe your current and future visits will be enhanced if cookies are enabled.
There are two ways to manage cookie preferences.
If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit www.aboutcookies.org, which contains comprehensive information on how to do this on a wide variety of desktop browsers.
Occasionally, we may use internet tags (also known as action tags, single-pixel GIFs, clear GIFs, invisible GIFs and 1-by-1 GIFs) at this site and may deploy these tags/cookies through a third-party advertising partner or a web analytical service partner which may be located and store the respective information (including your IP-address) in a foreign country. These tags/cookies are placed on both online advertisements that bring users to this site and on different pages of this site. We use this technology to measure the visitors' responses to our sites and the effectiveness of our advertising campaigns (including how many times a page is opened and which information is consulted) as well as to evaluate your use of this website. The third-party partner or the web analytical service partner may be able to collect data about visitors to our and other sites because of these internet tags/cookies, may compose reports regarding the website’s activity for us and may provide further services which are related to the use of the website and the internet. They may provide such information to other parties if there is a legal requirement that they do so, or if they hire the other parties to process information on their behalf.
If you would like more information about web tags and cookies associated with on-line advertising or to opt-out of third-party collection of this information, please visit the Network Advertising Initiative website http://www.networkadvertising.org.
We use third-party cookies (such as Google Analytics) to track visitors on our website, to get reports about how visitors use the website and to inform, optimize and serve ads based on someone's past visits to our website.
You may opt-out of Google Analytics cookies by the websites provided by Google:
https://tools.google.com/dlpage/gaoptout?hl=en
As provided in this Privacy Policy (Article 5), you can learn more about opt-out cookies by the website provided by Network Advertising Initiative:
http://www.networkadvertising.org
We inform you that in such case you will not be able to wholly use all functions of our website.
Close