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Total Dissolved Solids Meter Compared to Groundtruth in Coffee
March 11, 2022, 3:19 p.m. | Robert McKeon Aloe
Towards Data Science - Medium towardsdatascience.com
Coffee Data Science
Discovering the breadth of unknowns
I have been measuring Total Dissolved Solids (TDS) in espresso for a few years using a refractometer. I was always curious how accurate the TDS measurement was to the groundtruth. There isn’t much publicly available information, so I decided to collect some.
I used espresso powder as a groundtruth. Espresso powder is made by dehydrating espresso until you are left with just the dissolved solids. The espresso powder I had clumped together …
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