That's the beauty of the Murphy Cup. However, it certainly is not necessary to get an actual hydrometer reading. As said above, fill the test cup 2x, and dump it back into the hot syrup, on the 3rd time, lower the hydrometer into the hot syrup. By then what was at 219-220 will be at 211 most likely. Never drop the hydrometer into the test cup. If dropped even once, it is possible that the paper scale in the tube will get slid a little, rendering the hydrometer inaccurate. Good luck! Enjoy good syrup.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.