Input lever
Water Chemistry
Detail panel
Water source
The base water used for brewing.
AeroPress Wheel Variable
Mineral balance
Water Chemistry · Process state
The relationship between hardness, alkalinity, and specific ions.
Process state
Water Chemistry
Advanced detail
Technical science
Inferred
Definition
Mineral balance describes how the water’s components work together rather than viewing each ion in isolation.
Why It Matters
Two waters with the same TDS can taste very different because their mineral balance differs.
Page Context
Mineral balance is part of the Brew Supply AeroPress Wheel and helps brewers describe the relationship between hardness, alkalinity, and specific ions.
Related variables
Input lever
Water Chemistry
Wheel face
Water recipe
A deliberate mineral recipe added to low-mineral water.
Input lever
Water Chemistry
Wheel face
Water TDS
The total dissolved solids of the brew water.
Input lever
Water Chemistry
Wheel face
Hardness
The calcium and magnesium load that drives brewing hardness.
Input lever
Water Chemistry
Wheel face
Alkalinity
The water’s buffering capacity, often driven by bicarbonate.
Input lever
Water Chemistry
Advanced detail
Calcium
A hardness ion commonly present in brewing water.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.