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Innovative Use of Microchannels for pH Testing: Insights from Team Alpha

Team Alpha explored the potential of microfluidic channels made from polydimethylsiloxane (PDMS) to accurately test the pH levels of various substances using minimal samples. Through our investigation, we discovered that products like bleach and vinegar exhibited significant pH levels, demonstrating the effectiveness of this technology. Despite our limited resources, we successfully utilized microchannels to shed light on the acidity or basicity of household items, paving the way for potential future applications in diverse fields such as biology and chemistry.

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Innovative Use of Microchannels for pH Testing: Insights from Team Alpha

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  1. High Tech Micro channels Team: “Alpha” Members: Edwin Tachiri Susana Cabrera Alejandra Ibarra June 10th, 2011

  2. Outline • Understand how microchannels work • How could microchannels potentially help us in the future? • How microchannels helped us identify pH

  3. Objectives • To successfully use microchannels to test pH of substances • Learn about polymers • Identify the multiple uses microchannels have • Learn how microchannels are made

  4. What are microfluidic channels? Structures made of the polymer polydimethylsiloxane (PDMS) Less than 1mm in diameter Used to analyze cells, blood ( basically any fluid) but using a very small sample Could potentially be used to test evidence, DNA, cells.

  5. Statement Of Problem • The problem we had was to create a better way to test pH. • Our limitations wereonly having three toothpicks and one Petri dish. • Our restrictions wereone type of polymer and only having a week. • Our goals were trying to get the accurate pH using the smallest amount of materials.

  6. Analysis The microchannels allowed us to use a minimal sample of our substance in order to determine the pH We imitated the nanotechnology used to create the microchannels We used a curing agent to solidify the polymer PDMS

  7. Results • We used a pH indicator to test our substances • We found that: • bleach is basic (pH=10) • Vinegar is acidic(pH=3) • Dishwater is basic (pH=8) • Listerine is acidic (pH=2.5)

  8. Conclusion • Microchannels are a very useful technology: • They are used worldwide to test pH of substances. • Provide precise testing • Small samples of chemicals • They help us know whether substances are harmful to our life or not. This is bleach turning green!!!

  9. This are some pictures of microfluidic channels

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