The spectrophotometric HSI a given remaining-alpha fraction corresponds to.
This inverts Nickerson's relation,
remaining =1.0 − 1.10 · log10(HSI × 4.0)
and therefore
HSI=0.25 × 10^ ((1 − remaining) /1.10)
A brewer who has had a lab measure their hops has an HSI and no
percent-lost figure, and this converts between them. The decay curve above
doesn't use it. See the module header on why the two are easy to confuse.
The spectrophotometric HSI a given remaining-alpha fraction corresponds to.
This inverts Nickerson's relation,
and therefore
A brewer who has had a lab measure their hops has an HSI and no percent-lost figure, and this converts between them. The decay curve above doesn't use it. See the module header on why the two are easy to confuse.