Waste Allocation Load Lifter - Earth Class
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Join Date: Apr 2009
Location: ☼ Clearwater, FL ☼
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I've seen the same thing. It is due to the temp of the wort.
The automatic temp correction (ATC) of refractometers does not correct for hot wort. This ATC corrects for changes to the body of the refractometer.
The wort must be the same temp as the body of the refractometer. I always add 2 hot drops and set it down, then check in 5-10 minutes.
And you, my father, there on the sad height,
Curse, bless, me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light.