I have a Robinair 75240 Refractometer
I just checked the specific gravity of Diesel Exhaust Fluid in a fresh jug and it read 1.31. Previously I had checked 3 yr old DEF and it also read 1.31. Google says DEF should have 1.09 sg. I am using the battery acid scale to read sg, the coolant scales read in temperature degrees. I checked calibration using distilled water and it read 1.0.
Is there an issue with using the battery acid scale for DEF?
Coolant and Battery Refractometer | Robinair
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I just checked the specific gravity of Diesel Exhaust Fluid in a fresh jug and it read 1.31. Previously I had checked 3 yr old DEF and it also read 1.31. Google says DEF should have 1.09 sg. I am using the battery acid scale to read sg, the coolant scales read in temperature degrees. I checked calibration using distilled water and it read 1.0.
Is there an issue with using the battery acid scale for DEF?