Get our free book (in Spanish or English) on rainwater now - To Catch the Rain.

Difference between revisions of "Open-Source Photometric System for Enzymatic Nitrate Quantification"

From Appropedia
Jump to navigation Jump to search
Line 53: Line 53:
* [[Open-source hardware]]
* [[Open-source hardware]]
==In the news==
* [ Making a Better Nitrate Test Kit] - Michigan Tech News, [
* [ New Compact and Affordable Nitrate Test Kit Developed for Citizens] - SciCasts
[[Category:MOST completed projects and publications]]
[[Category:MOST completed projects and publications]]
[[Category:Open source hardware]]
[[Category:Open source hardware]]

Revision as of 15:29, 6 August 2015

Sunhusky.png By Michigan Tech's Open Sustainability Technology Lab.

Wanted: Students to make a distributed future with solar-powered open-source 3-D printing.
Currently looking for PhD or MSC student interested in solar energy policy- apply now!
Contact Dr. Joshua Pearce - Apply here

MOST: Projects & Publications, Methods, Lit. reviews, People, Sponsors, News
Updates: Twitter, Instagram, YouTube


Pearce Publications: Energy Conservation Energy Policy Industrial SymbiosisLife Cycle Analysis Materials Science Open Source Photovoltaic Systems Solar CellsSustainable Development Sustainability Education

This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been modeled.
This OSAT has been prototyped.
This OSAT has been verified by: MOST, NECi.

You can help Appropedia by contributing to the next step in this OSAT's status.




Nitrate, the most oxidized form of nitrogen, is regulated to protect people and animals from harmful levels as there is a large over abundance due to anthropogenic factors. Widespread field testing for nitrate could begin to address the nitrate pollution problem, however, the Cadmium Reduction Method, the leading certified method to detect and quantify nitrate, demands the use of a toxic heavy metal. An alternative, the recently proposed Environmental Protection Agency Nitrate Reductase Nitrate-Nitrogen Analysis Method, eliminates this problem but requires an expensive proprietary spectrophotometer. The development of an inexpensive portable, handheld photometer will greatly expedite field nitrate analysis to combat pollution. To accomplish this goal, a methodology for the design, development, and technical validation of an improved open-source water testing platform capable of performing Nitrate Reductase Nitrate-Nitrogen Analysis Method. This approach is evaluated for its potential to i) eliminate the need for toxic chemicals in water testing for nitrate and nitrite, ii) reduce the cost of equipment to perform this method for measurement for water quality, and iii) make the method easier to carryout in the field. The device is able to perform as well as commercial proprietary systems for less than 15% of the cost for materials. This allows for greater access to the technology and the new, safer nitrate testing technique.

Bill of Materials

Cost breakdown of the photometer case and electronics (Digikey part # unless externally referenced).


Electronic Schematics


How to use it

NECi Superior Enzymes
OS spectrometer being used to test soil with simplified nitrate test kit.

For more information on the test kits, contact NECi Superior Enzymes at 888.NITRATE or visit

See also

In the news],