Wanted: Mash pH Measurements

Discussion in 'Homebrewing' started by utahbeerdude, Feb 5, 2019.

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  1. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Short story: I am requesting that actual mash pH measurements (and relevant ancillary information) be posted in this thread.

    Motivation: I'm in the process of updating the model used in the MpH mash-pH calculator (this model is also used in Vikeman's well known Brew Cipher). To complete the updated model, actual mash pH (and ancillary) data are required. I hoping for a sufficient response here on the BA homebrewing forum that I can finish this task quickly, and thus make the new MpH model readily available before too long.

    What's needed: The following is needed for such data to be useful.

    1. Grain bill [specific grains mashed and amount of each grain (in lbs), ideal if grain color (Lovibond) is also included)]
    2. Amount of mash strike water (in gallons)
    3. Ionic content of source water [Na, Ca, Mg, SO_4, Cl, Nitrate (if available) and alkalinity (as calcium carbonate) all in ppm (= mg/L)]. [If such alkalinity is not available, then HCO_3 concentration and source water pH will suffice.]
    4. Salts added [CaCl, CaSO_4, MgSO_4, NaCl, NaHCO_3, and/or Ca(OH)_2, in grams]
    5. Acid added [%'age and amount (in mL)]
    6. Mash pH [when taken (from beginning of mash) and temperature of liquid when measured are helpful]


    For a concrete idea of what I looking for, here are data from a recent beer of a fellow BA member (you know who you are)

    5.0 Lbs Weyermann Pale Wheat
    4.7 Lbs Briess American Brewer's Two-Row
    0.85 Lbs Goldswaen Red (15L-23L caramel malt)
    4 gallons distilled water
    4 grams CaCl2
    4 grams CaSO4
    3.8 ml lactic acid (88%)
    Mash pH 5.23 @ ~ 30 minutes

    In lieu of posting on this thread, I'm happy to receive the info via email, if that is simpler. Just PM me for details.

    Finally, a shout out to Jack Horzempa, who recently sent me data on 12 of his beers!

    Thanks and Cheers!
     
    #1 utahbeerdude, Feb 5, 2019
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  2. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    10.45 Lbs Weyermann Pilsner (2L)
    0.7125 Lbs Carafoam (2L)
    4 gallons distilled water
    4.8 grams CaCl2
    1.6 grams CaSO4
    0 acid
    Mash pH 5.54 @ 30 minutes @ 72F (meter calibrated at 70F)
     
    #2 VikeMan, Feb 9, 2019
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  3. BeboThoughts

    BeboThoughts Zealot (559) Mar 24, 2012 Canada (ON)
    Trader

    Same base water for both beers:

    Calcium - 37.2
    Magnesium - 8.8
    Sodium - 15.5
    Bicarbonate - 110.3
    Carbonate - 1.7
    Sulfate - 27.4
    Chloride - 29.3
    Measured pH at 20 degrees C - 7.02

    ====

    Beer 1:
    11 lb Canada Malting Premium 2 row
    2.2 lb Rolled Oats
    2 lb Canadian Wheat
    1 lb Carafoam
    2 oz rice hulls

    5.2 gal strike water (~1.25 qt/lb)
    5g CaSO4
    10g CaCl2

    10 mins into mash, with 2.3 mL lactic acid 88%, measured at 5.48 pH at 23 degrees C
    added additional 0.7 mL lactic (3.0 total), measured 5.33 at 21 C

    ====

    Beer 2:
    8 lb Canada Malting Premium 2 row
    1 lb flaked barley
    1 lb Canadian Wheat
    1 lb Carafoam
    1 oz rice hulls

    4.5 gal strike water (~1.5 qt/lb)
    2.4g CaSO4
    10g CaCl2
    2.6g Epsom

    10 mins into mash, with 1.2 mL lactic acid 88%, measured at 5.33 pH at 22 degrees C
     
    #3 BeboThoughts, Feb 17, 2019
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  4. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    @BeboThoughts, thanks for your data. It is very helpful. Cheers!
     
    #4 utahbeerdude, Feb 23, 2019
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  5. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    10.608 Lbs Weyermann Vienna (3.5L)
    1.5644 Lbs Crisp Pale Chocolate Malt (220L)
    0.5759 Lbs Bairds Roasted Barley (550-650L)
    5.0 gallons distilled water
    1.0 grams CaCl2
    0 acid
    Mash pH 5.33 @ 25 minutes @ 70F (meter calibrated at 70F)
     
    #5 VikeMan, Mar 3, 2019
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  6. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    4.445 lbs Simpsons Golden Promise (2.6L)
    3.460 lbs Breiss Brewer's 2-Row (1.8L)
    0.494 lbs Weyermann Pilsner (2L)
    0.494 lbs Weyermann Pale Wheat Malt (2L)
    0.494 lbs Weyermann Munich (6L)
    3.5 gallons distilled water
    3.6 grams CaCl2
    1.8 grams CaSO4
    1.5 ml Lactic Acid (88%)
    Mash pH 5.28 @ 30 minutes @ 69F (meter calibrated at 70F)
     
    #6 VikeMan, Apr 6, 2019
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  7. BeboThoughts

    BeboThoughts Zealot (559) Mar 24, 2012 Canada (ON)
    Trader

    @utahbeerdude

    Same water as before:

    Calcium - 37.2
    Magnesium - 8.8
    Sodium - 15.5
    Bicarbonate - 110.3
    Carbonate - 1.7
    Sulfate - 27.4
    Chloride - 29.3
    Measured pH at 20 degrees C - 7.02

    10 lb Wyermann Pilner
    .75 lb carapils
    4 oz acidulated malt

    1 g Gypsum
    1.5 mL 88% lactic acid

    8 gallons mash water (doing a no sparge batch)

    measured pH at 10 mins, 22.2 C was 5.40
     
    #7 BeboThoughts, Apr 14, 2019
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  8. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    48 lbs Avangard Pilsner (1.5L)
    32 lbs Avangard Wheat Malt (2.5L)
    26 gallons strike water
    Water Profile...
    Ca: 25
    Mg: 7
    Na: 27
    Cl: 36
    SO4: 42
    Total Alkalinity as HCO3: 51
    No Salts
    75 ml Lactic Acid (88%)
    Mash pH 5.1 @ 30 minutes @ 60F (meter calibrated at 60F)
     
    #8 VikeMan, Apr 20, 2019
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  9. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Now that's a big batch! Brewing on a commerical system?
     
    #9 utahbeerdude, Apr 20, 2019
  10. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    Yes, 40 gallon pilot batch. Doing a little consulting with a local startup.
     
    #10 VikeMan, Apr 20, 2019
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  11. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    9 lbs Crisp Maris Otter (3.5L)
    1 lb Briess C-80 (80L)
    5 Ounces Simpsons Chocolate Malt (412L)
    0.324 Ounces Simpsons Black Malt (550L)
    3.5 Gallons Strike Water
    Water Profile...
    Ca: 39
    Mg: 11
    Na: 12
    Cl: 17
    SO4: 39
    Total Alkalinity as HCO3: 107
    1 gram CaCl2
    No Acid
    Mash pH 5.35 @ 30 minutes @ 74F (meter calibrated at 73F)
     
    #11 VikeMan, May 7, 2019
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  12. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Hey @VikeMan, is this really 0.324 Oz Black Malt, or is it perhaps 0.324 lb?
     
    #12 utahbeerdude, May 10, 2019
  13. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    Nope. It's 0.324 oz.
     
    #13 VikeMan, May 10, 2019
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  14. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Now that's precision!
     
    #14 utahbeerdude, May 10, 2019
  15. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    @utahbeerdude

    4.26 Lbs Weyermann Pilsner (1.6L)
    4.26 Lbs Weyermann Pale Wheat Malt (2L)
    3.5 gallons distilled water
    2 grams CaCl2
    2 grams CaSO4
    5 ml Lactic Acid (88%)
    Mash pH 5.17 @ 30 minutes @ 74F
     
    #15 VikeMan, May 25, 2019
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  16. jbakajust1

    jbakajust1 Pooh-Bah (2,552) Aug 25, 2009 Oregon
    Pooh-Bah

    5.5# Rahr 2 Row 1.8L
    1.5# Flaked Oats 1L
    0.25# Carastan 30/37
    0.25# Carapils 2L
    0.125# Carafa III Special 525L

    4.5 gallons tap water
    7.6 pH, 4.2 Ca, 1.8 Mg, 5.9 Na, 2.2 Cl, 4.1 SO4, 23 HCO3
    Water Additions
    CaCl 5g, MgSO4 1.5g, NaCl 1g
    Mash pH 5.54
     
    #16 jbakajust1, Jun 4, 2019
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  17. utahbeerdude

    utahbeerdude Maven (1,374) May 2, 2006 Utah

    Thanks to all who have posted to this thread! If you'd like to contribute some additional data to this thread, now is the time, as the update to MpH will likely be ready before the end of the year. It should be significantly more accurate at predicting mash pH than the previous version. Cheers!
     
    #17 utahbeerdude, Dec 8, 2019
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