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Water numbers from Durban Event – South African Coffee Roasters Association

South African Coffee Roasters Association

Water numbers from Durban Event

The Durban roasters had and found it really interesting. We used a brix, TDS, refractometer and some standard other tests.

 

Water Guatemala  Washed Ethiopia Natural TDS ALK PPM PH
RO Water High Acidity, Unbalanced, Strange flavour High Acidity, Unbalanced, Strange flavour 0.02 40 6.2
Boiler Water Unanimous vote as best flavour Unanimous vote as best flavour 145 40 8.4
Durban Water Surprisingly not bad, very close to Boiler Surprisingly not bad, very close to Boiler 109 80 8.4

 

General notes: Darker roasts (Natural) more forgiving. RO (Reverse Osmosis)  produces completely unbalanced coffee, terrible in the cup.

 

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