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Thread: Buying calibration fluids outside the US?

  1. #1
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    Buying calibration fluids outside the US?

    Hi all ! I live in Costa Rica. I need to buy calibration fluids for ORP and salinity.

    Sadly because I live outside the US cant buy from some online vendors (BRS for example). But I can from marine depot or amazon. Sadly those products are not available on those pages.

    Any alternatives?

    Thanks in advance !

  2. #2
    Frequent Contributor zombie's Avatar
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    You might be able to find pinpoint 53mS locally. If you can't find any and have a good digital scale, randy holmes farley has an article on how to make your own with table salt and RODI water.

    Sent from my SM-G965U using Tapatalk

  3. #3
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    how about ORP?

  4. #4
    Frequent Contributor zombie's Avatar
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    ORP doesn't require calibration unless used in conjunction with a ozone generator or sulfur denitrator. If you use one of those, you need to get quinhydrone and pH 4.0

    Sent from my SM-G965U using Tapatalk

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