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pH Meter

pH Meter. Relative Merits Report. Joseph Pecsenyicki. SAIT Comm 238 Marcel Carpenter November 26, 2013. A typical pH meter: The HI 2211 by Hanna Instruments. (Source: HI 2211 Instruction Manual, p. 5). pH meter lifetime: 5 years Model currently in use – discontinued

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pH Meter

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  1. pH Meter Relative Merits Report Joseph Pecsenyicki SAIT Comm 238 Marcel Carpenter November 26, 2013

  2. A typical pH meter: The HI 2211 by Hanna Instruments (Source: HI 2211 Instruction Manual, p. 5)

  3. pH meter lifetime: 5 years • Model currently in use – discontinued • Require 10 for a volume discount • Compare 3 models for: • Accuracy • Complexity • Computer interface

  4. Comparison Of Three pH Meters

  5. Conclusions

  6. Accuracy: Least Most Intermediate ±0.02 pH • But Lime Softener pH ≈ 10.0-10.2 • pH 20 more than adequate

  7. Complexity: Least Most Intermediate 8 ½ page manual • pH 20 simplest

  8. Computer interface: No Yes Yes • Reduces operator transcription errors • But facility does not have LIMS • pH 20 adequate...at this moment!

  9. Conditional Recommendation LIMS No LIMS pH 20 best Adequate pH accuracy Simplest Lacks computer interface HI 2215 best • Good pH accuracy • Moderate complexity • Computer interface

  10. pH 20 by Hanna Instruments (Source: pH 20 Instruction Manual, p. 5)

  11. References 827 pH Lab Instruction Manual, Metrohm [online], n.d. Available: http://www.metrohm.com/. [Accessed November 17, 2013] HI 2211 Instruction Manual, Hanna Instruments [online], n.d. Available: http://www.hannainst.com/usa/. [Accessed November 17, 2013] HI 2215 Instruction Manual , Hanna Instruments [online], n.d. Available: http://www.hannainst.com/usa/. [Accessed November 17, 2013] pH 20 Instruction Manual, Hanna Instruments [online], n.d. Available: http://www.hannainst.com/usa/. [Accessed November 17, 2013] Ian Mackay. Instructor, SAIT. Interviews. Calgary, AB. November 18-19, 2013 Wikipedia, The Free Encyclopedia. “Hydrogen ion.” [online]. October 7, 2013. Available: http://en.wikipedia.org/w/index.php?title=Hydrogen_ion [Accessed November 25, 2013]

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