I had taken a few measurements using a refractometer and noticed that after I took the initial reading (pull sample, add to lens, blow on it, close lens, hold it up to natural light), the Brix measurement increased from 12.8 to 13.2. I found as I open and close the lens a few times with the same sample, I get the same result (increases to 13.2) so I guess the question is which measurement should I record? The first measurement, or the final measurement? The wort was around room temp when pulled. Probably would be 1-2 minutes between measurements.
Edit: should note that I couldn't locate my hydrometer so couldn't confirm the reading.
Edit: should note that I couldn't locate my hydrometer so couldn't confirm the reading.