Here's my situation... I have calibrated my salinity probe with 35 ppt refractive index standard solution and when in the solution the probe is reading 35.0. When I move the probe to my RODI water it reads 6.0 and I know that is really at 0. When I move the probe to my sump the probe then reads anywhere from 34-35.6. I know that my water is really at a 1.025-1.026.
Without just saying take 10 points off the probes value is there a way to force the adjustment?
Manually Calibrate Salinity
Re: Manually Calibrate Salinity
6 is the lowest the probe reads. It's normal. It sounds like you're probe is reading perfectly for 1.025-1.026.
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Re: Manually Calibrate Salinity
So how do you know what your salinity really is then? Do you just mentally subtract 10 points?
Re: Manually Calibrate Salinity
Do you keep your tank at 25ppt?
Salinity measurements are in ppt and not specific gravity.
Salinity measurements are in ppt and not specific gravity.
Roberto.