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  #1  
Old 12-08-2013, 09:21 PM
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Default Calibrating Refractometer

What are you people using for sloution to recalibrate your refractormeters?
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  #2  
Old 12-08-2013, 09:52 PM
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Pinpoint Calibration Fluid 53.0 mS

The only thing I'll ever used
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Old 12-08-2013, 09:53 PM
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Originally Posted by wayner View Post
Pinpoint Calibration Fluid 53.0 mS

The only thing I'll ever used
Where can I get this in the south? I'm in cranston
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Old 12-08-2013, 09:53 PM
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Pinpoint Calibration Fluid 53.0 mS

The only thing I'll ever use
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  #5  
Old 12-08-2013, 09:58 PM
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Any brand with 35ppt is good enough for me
I follow the 45 seconds instructions with my ATC
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Old 12-08-2013, 10:16 PM
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I just use 0ppm rodi water. Dunno if that's the right thing to do but hey it's working n free!!! Lol
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Old 12-08-2013, 10:34 PM
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I just use 0ppm rodi water. Dunno if that's the right thing to do but hey it's working n free!!! Lol
This is what I do.. I hope it works haha
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Old 12-08-2013, 10:36 PM
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Originally Posted by jason604 View Post
I just use 0ppm rodi water. Dunno if that's the right thing to do but hey it's working n free!!! Lol
I used to do this as well but it is much better to calibrate with a known 35 ppt solution such as the pinpoint one listed above.

Using 0 ppm RODI water to calibrate my refractometer, my salinity was acutally at 1.028 when the refractometer was reading 1.025. Didn't know this until after I had used the pinpoint solution to calibrate.
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Old 12-08-2013, 10:58 PM
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Calibrate??? hmmm...
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Old 12-08-2013, 11:20 PM
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Originally Posted by Stones View Post
I used to do this as well but it is much better to calibrate with a known 35 ppt solution such as the pinpoint one listed above.

Using 0 ppm RODI water to calibrate my refractometer, my salinity was acutally at 1.028 when the refractometer was reading 1.025. Didn't know this until after I had used the pinpoint solution to calibrate.
Where can I buy this?
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