Can refractometers break

[B-ridge]

I'm sure just like with everything in life it is possible for a refractometer to break. If it fell, got submerged in water,etc
My issue is neither. Mine worked last week when I was checking salinity on my display tank and then my QT tank. I know for sure there were 2 different salinity cause I raised salinity on display tank. Long story short I re-calibrated my refractometer with 35ppm solution. Placed 3-4 drops on screen. Flattened it out. Waited 45 seconds then adjusted with screw to 35ppm. I tested both my display and my QT and refractometer gave me the same number which I know isn't right.
Is there some something else I can try or possibly am not doing right? I have apex lab grade salinity probe in place in sump but I don't wanna rely on just that. Plus I need to find the thread on apex salinity probe changing during temps. I'm hearing it's not supposed to do that

 

[Reef2zach]

Use fresh water on it. If it reads 0 then it's probably good. If it reads anything else somethings deffinetly wrong

 

[B-ridge]

Yes I tried that also. Gave me a reading of 1.15

 

[reefwiser]

 

[B-ridge]

Thanks for the video. It's the exact same model and calibration fluid I use. I've done exactly the same thing he's done. Still not working properly

 

[reefwiser]

You could have a bad probe these are very delicate and it doesn't take much to mess them up