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Espresso planet blog
Coffee and Hard Water
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During the brewing of coffee and espresso, solids are extracted from the coffee grounds and can therefore be measured with a TDS meter. Depending on Brew Temperature, Extraction Time, Grind Coarseness, Amount of Coffee etc., the TDS value measured will vary. The monitoring of the TDS value will ensure consistent product quality and help to identify if extractions are within acceptable parameters.
You'll also want to measure incoming water TDS. For coffee brewing equipment a TDS value of 100-200 PPM is ideal. For espresso machines we recommend a TDS of approximately 50 PPM. |
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