Salinity Now!

[Wavemode]

I'm trying to determine my correct SG. I have a refractometer that says 1.026 when I calibrate it to zero with RODI. But if I use the calibration fluid and calibrate it to the 35 ppt fluid then my salinity reads 1.022. I also tried my old cheap plastic tester with the float in it and it reads 1.024. I ordered the good Milwaukee tester but it won't be here for 3 more days. Has anyone been through this that can help me figure out if I need to raise my SG?

 

[Starwar]

I bought my refractormeter from BRS and it specifically said not to calibrate using RODI...My salinity is reading 1.026 with the refractometer calibrated with the solution, and my Hydrometer reads 1.024! I would use the calibration fluid and go with that.

 

[JOKER]

It is best to calibrate using the solution at around 77 degrees for best results. RODI is not good for calibration.

 

[Wavemode]

I bought my refractormeter from BRS and it specifically said not to calibrate using RODI...My salinity is reading 1.026 with the refractometer calibrated with the solution, and my Hydrometer reads 1.024! I would use the calibration fluid and go with that.

Thanks so much! I will go with that.