[quote=“Gr8abe”]when I first took the PB gravity reading, the temp was very hot, and the grav. read 1.100 right on the money. so I let it cool down to the mid 70’s and read it again, did the temp corrections and it read 1.090. I’ve never seen this before, ever. It was a brand new, fresh out of the box thermometer, so maybe that had something to do with it? I dunno.
I took another sample using tap water took the temp and cross checked it with an older hydromemter, and they were about .002 off from each other, but that doesn’t explain why my PB was so crazily high.[/quote]
it wasn’t that high, there was a really messed up reading somehow. If you hit 1.042 for OG you preboil was probably around 1.034 or so.
Reading 1.100 is very high in sugar…water should be 1.000.
Most are calibrated to 62 degrees, some I think 67 or so