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Open-source colorimeter.

Gerald C Anzalone1, Alexandra G Glover, Joshua M Pearce

  • 1Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI 49931, USA. gcanzalo@mtu.edu

Sensors (Basel, Switzerland)
|April 23, 2013
PubMed
Summary
This summary is machine-generated.

This study presents an open-source colorimeter, significantly reducing the cost of chemical oxygen demand (COD) testing. This accessible technology democratizes scientific instrumentation for researchers globally.

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Area of Science:

  • Analytical Chemistry
  • Instrumentation Engineering
  • Open-Source Science

Background:

  • Sophisticated scientific sensors are often prohibitively expensive, limiting access for many researchers.
  • There is a need for cost-effective, reliable instrumentation for scientific analysis.

Purpose of the Study:

  • To develop a methodology for creating an open-source colorimeter.
  • To provide an affordable alternative for chemical oxygen demand (COD) testing.
  • To demonstrate the potential for open-source hardware in scientific instrumentation.

Main Methods:

  • Designed and developed a 3-D printable, open-source colorimeter using readily available components.
  • Utilized open-source hardware and software solutions exclusively.
  • Compared the performance of the open-source colorimeter against a commercial portable colorimeter using standard COD test vials.

Main Results:

  • The open-source colorimeter significantly reduced the cost of reliable closed reflux COD testing by two orders of magnitude.
  • The developed colorimeter demonstrated good reproducibility in performance evaluations.
  • The design serves as a versatile platform for developing similar instruments, such as nephelometers.

Conclusions:

  • The open-source colorimeter offers an economically viable alternative for widespread adoption in scientific research.
  • This approach democratizes access to sophisticated instrumentation, particularly benefiting under-developed and developing world laboratories.
  • Open-source methodologies can drive innovation and accessibility in scientific tools.