Milwaukee MA887 readings inconsistent

[gobeach]

I have been having issues with my refractometer lately. Anyone else see different readings based on the temperature of the refractometer?

 

[miPapareef]

Battery level?

My basement is in the 68 to 71 range depending on the season and I haven’t had any differences in readings. I let it sit a minute to temp adjust before I take the measurement. What temp is your tank and meter?

I also use RODI to calibrate about every 2 weeks. I used the distillided that came what the heck the unit but I can’t detect any difference using distilled or my rodi.

 

[gobeach]

Battery is new. I use the refractometer outside and calibrate it before use. Tank temp is ~78, but I'm using the device to check the saltwater I'm making for the tank. I get consistent measurements when I test the new water and the tank water, but it's reading very high - I suspect it's the refractometer's temperature that is influencing the readings.