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- 03:13, 3 March 2008 (diff | hist) N PH Meter (New page: <big>pH Meter</big> ==Errata== ==Probe== A pH probe works something like a little battery powered by the test solution. In a nutral solution the pH probe would generate 0v. An acidic sampl...)
- 02:37, 3 March 2008 (diff | hist) PPM Meter
- 01:27, 3 March 2008 (diff | hist) Main Page
- 21:49, 2 March 2008 (diff | hist) PPM Meter
- 17:37, 2 March 2008 (diff | hist) PPM Meter (→Long Term Observations)
- 17:36, 2 March 2008 (diff | hist) PPM Meter (→Operation)
- 17:26, 2 March 2008 (diff | hist) N File:Reading2K.jpg (top)
- 17:26, 2 March 2008 (diff | hist) N File:Reading1K.jpg (top)
- 17:25, 2 March 2008 (diff | hist) N File:Finishedmeter.JPG (top)
- 17:19, 2 March 2008 (diff | hist) PPM Meter
- 17:10, 2 March 2008 (diff | hist) PPM Meter
- 17:09, 2 March 2008 (diff | hist) PPM Meter
- 17:02, 2 March 2008 (diff | hist) N File:Circuitcloserup.jpg (top)
- 17:01, 2 March 2008 (diff | hist) N File:Protocircuit.jpg (top)
- 17:01, 2 March 2008 (diff | hist) N File:Probes-small.jpg (top)
- 17:01, 2 March 2008 (diff | hist) N File:DifferentialOutput.jpg (top)
- 17:00, 2 March 2008 (diff | hist) N File:PrettySineWave.jpg (top)
- 17:00, 2 March 2008 (diff | hist) N File:Schematic-Only.jpg (top)
- 16:59, 2 March 2008 (diff | hist) N File:Schematic.jpg (Full schematic to ppm meter) (top)
- 16:56, 2 March 2008 (diff | hist) PPM Meter (→How to Make Calibration Solutions)
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