water recipe for coffee

from james Hoffman's book "how to make the best coffee at home", actually adapted from  Jon Gagne "physics of filter coffee"

grindscience:


above: NaHS04 should be NaHCO3. Alkanity should be 27.6ppm /mk alkalinity  , or 595.6 ppm for each g of Sodium Bicarbonate added to 1L of water.
Anyways, this looks rather like a concentrate, ( 1000 times too strong)

barista hustle diy water recipes, the world in two bottles

Recipe 4 – Barista Hustle Water Recipe

• 48.8g Buffer
• 19.4g Mg
• 931.8g DI water

The original Barista Hustle water recipe — where it all began. Add an extra gram of the Mg concentrate and you’re at the top limit of the SCA specifications.


Barista Guild of Europe


Chris Kornman's practical water guide

above: Making Custom Water Formulas>>>> last row should be Potassium Bicarbonate(KHCO3),
second last row should be Sodium Bicarbonate(NAHCO3)





    40ppm Ca2+ (as CaCO3) ÷ 681.2 = 0.0587 g /L
            0.0587 g/L x 4L = 0.235 g of CaCl2 to add to 4L water

    40ppm Mg2+ (as CaCO3) ÷ 489.6 = 0.0817 g
           0.0817 g/L x 4L = 0.327 g of MgCl2 to add to 4L water

    40ppm HCO3– (alkalinity as CaCO3) ÷ 595.32 = 0.067 g
           0.067 g/L x 4L = 0.269 g of KHCO3 to add to 4L water


Matt Perger's water recipe

Inspired by the Water for Coffee book. All you need is bicarb soda (baking soda, NOT baking powder), epsom salt (magnesium sulfate), and distilled water. All super cheap and readily available.

8.6g baking soda (sodium bicarbonate),
25g epsom salt (magnesium sulfate)
to 500g distilled water.
This is your concentrate.


 Add 2g of concentrate to 500g of  distilled water
This recipe will be very similar to SCA's. It gives 18 of Mg++ mg/L and 47 mg/L of HCO3-
or 34ppm NaHCO3/98ppmMgSO4


coffeechronicler

ppm equals weight of salt added / weight of solution *1000000


70/30 water from fivesenses

online ppm and alkalinity calculator from brewersfriend


Gagne diy excel

API titration calc