I took several measurements pre-boil and postboil with my new refractometer and the results varied wildly.
Preboil I measured 15.2, 14.8 and 14.3. All of these measurements allowed ~5 minutes for the sample on refractometer to drop to near room temp.
Post boil I measured 18 and 17.2 with ~10 minutes each time for temp to drop.
The last measurement I did Post and preboil ended up being very close to my hydrometer.
Is there some technique that I could be messing up?
Preboil I measured 15.2, 14.8 and 14.3. All of these measurements allowed ~5 minutes for the sample on refractometer to drop to near room temp.
Post boil I measured 18 and 17.2 with ~10 minutes each time for temp to drop.
The last measurement I did Post and preboil ended up being very close to my hydrometer.
Is there some technique that I could be messing up?