Released on: June 12, 2008, 2:05 am

Press Release Author: Analytical Technology

Industry: Environment

Press Release Summary: Specialist electrochemical sensor manufacturer Analytical
Technology announces that its recently launched Q45N Dissolved Ammonia Monitor
achieves continuous, on-line monitoring of the drinking water chloramination
process. Chloramination is increasingly being used during potable water treatment in
order to limit trihalomethane (THM) formation and ensure disinfection in large
potable water distribution systems. The innovative Q45N monitor from Analytical
Technology enables accurate and dependable measurements of free and total ammonia
and monochloramine concentration in potable water.

Press Release Body: (June 11, 2008) Specialist electrochemical sensor manufacturer
Analytical Technology announces that its recently launched Q45N Dissolved Ammonia
Monitor achieves continuous, on-line monitoring of the drinking water chloramination
process. Chloramination is increasingly being used during potable water treatment in
order to limit trihalomethane (THM) formation and ensure disinfection in large
potable water distribution systems. The innovative Q45N monitor from Analytical
Technology enables accurate and dependable measurements of free and total ammonia
and monochloramine concentration in potable water.

Effective control of the chloramination process requires the addition of sufficient
ammonia to ensure that only monochloramine is formed, while limiting the amount of
excess ammonia. Excess ammonia causes taste and odour problems and reacts with
chlorine, therefore decreasing its disinfection efficacy. As a consequence, a
powerful ammonia monitor is required to provide reliable measurements of dissolved
ammonia and allow users to control ammonia levels.

The advanced Q45N Dissolved Ammonia Monitor employs two separate sensors, the first
measuring monochloramine and the second measuring total ammonia after reagent
addition. Based on these measurements, the monitor calculates the concentration of
free ammonia, which effectively represents the excess ammonia that has not been
combined with chlorine. The chloramine concentration is measured using a unique
amperometric sensor that responds linearly to chloramines while eliminating
interface from excess free chlorine in solution. The amperometric sensor also
provides excellent repeatability over long periods of time.

Reagents are inexpensive and usage is low, and as a consequence the monitor has a
very low cost of ownership. The monitor has two 4-20mA outputs programmable for free
ammonia, total ammonia and monochloramine concentration. This allows all the
important parameters to be measured on a single instrument.

The Q45N system consists of a wall mounted chemistry system and an electronic
display and alarm package. The chemistry system contains the necessary metering
pumps to provide chemical addition to the sample and delivery of the sample to the
sensing element. The electronic display and alarm package provides the user
interface to the system. Ammonia concentration is displayed on a large format LCD
display with secondary display for other operating variables.

For more information about the Analytical Technology Q45N Dissolved Ammonia Monitor
for the continuous, on-line monitoring of the drinking water chloramination process,
please call +44 (0)1457 832800, e-mail info@analyticaltechnology.com or visit
www.analyticaltechnology.com

-ENDS-

For further press information please contact: Eleanor CallanMonk, The Scott
Partnership, 1 Whiteside, Station Road, Holmes Chapel, Cheshire, United Kingdom Tel:
+ 44 (0)1477 539539 Fax: +44 (0)1477 539540 E-mail: ati@scottpr.com

Web Site: http://www.analyticaltechnology.com

Contact Details: THE SCOTT PARTNERSHIP
1 WHITESIDE
STATION ROAD
HOLMES CHAPEL
CHESHIRE
CW4 8AA
01477 539539
ati@scottpr.com