Refractometers and the color of light used: important!

Discussion in 'Water Chemistry' started by Mr. Bill, Sep 28, 2014.

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  1. Todd_Sails

    Todd_Sails Giant Squid

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    No, I probably have a more basement brand, it ways ATC on it in big letters.
     
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  3. Mr. Bill

    Mr. Bill Native Floridian

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    Personally, I would err on the side of caution and use the 35 ppt fluid anyway. Refractometers are great for fine-tuning any formula, but should be calibrated at or near the target level for best accuracy.
     
    Last edited: Sep 29, 2014
  4. DSC reef

    DSC reef Giant Squid

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    Gotcha. Thanks guys
     
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  5. Mr. Bill

    Mr. Bill Native Floridian

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  6. Todd_Sails

    Todd_Sails Giant Squid

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    I used my calibration fluid on the lights I usually use. Spot on.
     
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  7. Mr. Bill

    Mr. Bill Native Floridian

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    That's great to hear. :)
     
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  9. mdbostwick

    mdbostwick Vlamingii Tang

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    Mine didn't come with calibration fluid. The instructions only say to use 0 tds water. Do you guys think it would be best for me to buy some calibration fluid? If so, how do i know what the right stuff to buy is?
     
  10. DSC reef

    DSC reef Giant Squid

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    Any calibration fluid is good. It's basically saltwater that's 35ppt to calibrate accurately. I got some yesterday and realized my refractometor was off but not by much compared to 0 tds water. Mine said to only use ro but I'm glad I bought the calibration fluid. Thanks again reefers