• September 15, 2017 at 6:14 am #891
    Ian Murfitt
    Participant

    My first go at a YAN test, a few bumps but this may get us started.

    pH 3.4
    TA 6.25
    Brix 21.6 starting to ferment
    YAN 148.96 (sounds precise but it actually is calculated from a 0.8 measure, so I would say comfortably that the YAN is over 140 and slightly less than 149.)

    Please post your measurements, or email me, and I will decide tomorrow if I should redo the test.

    • This topic was modified 2 months, 3 weeks ago by Dave Burt.
  • September 15, 2017 at 4:41 pm #893
    Dave Burt
    Keymaster

    OK folks, here are the YAN results from Ian, Dave, and Don. Other chemistry numbers also included.

    Ian: Brix 21.6, pH 3.40, TA 6.3, YAN 149
    Dave: Brix 21.9, pH 3.39, TA 6.1, YAN 140
    Don: Brix 21.8, pH 3.44, TA 5.9, YAN 168
    Mean: Brix 21.8, pH 3.41, TA 6.1, YAN 152

  • September 19, 2017 at 8:49 pm #897
    Doug Markin
    Participant

    My Numbers on the clear juice after 4 days cold soak in the creek at 7 deg C:
    Brix 20.7, pH 3.66, TA 4.575
    I Calibrated my refractometer with 20 deg C distilled water and calibrated my pH meter with new 4.0, 7.0 buffering solutions and Sodium Hydroxide solution.

    Not sure why my numbers are so different. I did re-calibrate and re-test with new solutions but my pH and TA were the same.
    Any recommendations?

  • September 23, 2017 at 6:53 pm #903
    Don Graham
    Participant

    My Lodi Zin #s
    Brix 28
    Ph 3.7
    TA 6.5
    Yan 210
    I am reducing Brix to 25
    May add some acid to lower Ph

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