Iris Kwan
Owns the water chemistry pages
Iris runs the bench: same source water, same instruments, every method measured the same way.
Writes About
- TDS, hardness, and alkalinity targets
- Mineral profiles for coffee and beer
- The test bench methodology
She writes the chemistry pages — what the numbers mean, which targets matter for which cup, and where the marketing quietly disagrees with the measurement.
“Every filter claim is testable for about forty dollars of instruments. So we test.”
Reach Iris through editor@homebrewfilters.com — corrections are welcomed and credited.
Also writing here: Erik Sandoval · About the site