|}
==History and Social Context==
Hach Company was started in 1947 by Clifford and Kathryn Hach, in Ames, Iowa. Their first success was the development of a simplified titration method for measuring hardness in drinking water. As the product line expanded to include more parameters and instruments, the company continued to “bring analytical chemistry out of the laboratory and put it into the workplace and in the hands of the general public.”
Hach opened a Europe office in Namur, Belgium, in 1972, as a first step in the expansion of a global presence that continues today. In 1999, the European facility moved to the Düsseldorf location of the sister company.
==Suitable Conditions==
==Technical SpecificationsConstruction, operations and maintenance==
[[Image:Pic8.jpg|thumb|right|150px|How to Interpret results]]
[[Image:Hach test.jpg|thumb|right|150px|Sample results]]
=====Operation=====The pathoscreen medium comes in pillows (like sachets) with enough powder to test 100ml of water. The sample water is put in sterilized bottles, and the contents of PathoScreen Medium powder pillow is added and left for 24 hours. The change in colour indicates the safety of the water. For more details read the attached document. = ====Maintenance=====
In the time that the powder is working, the sample should be stored at a temperature between 25 and 35 degrees Celsius.
=====Manufacturing=====
=====Estimated Lifespan=====
==CostCosts==
The cost of the field kit, including enough media for 100 presence-absence tests using 20 mL sample, or 20 MPN tests. Reusable glass vials, and foil-pillowed media, increases shelflife, varies per location and nearest available distributor. To order it go to [http://www.akvo.org hach website].
==Country Field Experiences==
==ManualsReference manuals, videos, and links==
[http://www.sopac.org/tiki-download_file.php?fileId=1194 Analytical Procedure Pathoscreen Field Kit] <br>
[http://www.hach.com/fmmimghach?/CODE%3AL7015547%7C1 Indicator Organisms]
==Movies==
==External Links==
http://www.hach.com