Calibrating Refractometer

[Madreefer]

What are you people using for sloution to recalibrate your refractormeters?

[wayner]

Pinpoint Calibration Fluid 53.0 mS

The only thing I'll ever used

[SteveCGY]

Originally Posted by wayner

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

[wayner]

Pinpoint Calibration Fluid 53.0 mS

The only thing I'll ever use

[gregzz4]

Any brand with 35ppt is good enough for me
I follow the 45 seconds instructions with my ATC

[jason604]

I just use 0ppm rodi water. Dunno if that's the right thing to do but hey it's working n free!!! Lol

[ashr]

Originally Posted by jason604

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

[Stones]

Originally Posted by jason604

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.

[Aquattro]

Calibrate??? hmmm...

[ashr]

Originally Posted by Stones

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?