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does anyone have a ph tester (or what ever is called) circuit?

Discussion in 'Electronic Basics' started by delounge, Jul 21, 2003.

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  1. delounge

    delounge Guest

    must be simple
    with some kind of explaination

    thanks for your help
  2. gothika

    gothika Guest

    What are you using it for?(Testing pool ph or critical lab work.)
    You can usually pick one up cheaper than you can build.
    Scott Welch or Allen Welch makes a variety from a pocket unit to a
    high end table top unit.
    Try going over to the Edmund Scientific site they sell them.
    (I have a small pen type that is extremely accurate that I use for
    testing photo chemicals, also works on my swimming pool. Cost 50.00
  3. AC/DCdude17

    AC/DCdude17 Guest

    X-No-Archive: Yes

    Not useful at all without the pH electrode. The most expensive part in this project.
  4. Lim PE

    Lim PE Guest

    | I have a nice pocket pH tester sold by Cole Parmer

    My uncle ( a crop biologist ) said pocket ph meters are not
    durable, so I bought & use a pack of 100 strips of
    Universalindikator pH 0 -14 ( made by Merck, in Germany ) :
    work well for colourless fluid, but may be less accurate (
    colours displayed will be darkened ) for dark coloured fluid.
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