str1p3s
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- Jan 5, 2016
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I was wondering if anyone else has dealt with this or has any ideas what happened.
My friend brewed yesterday, collected 8 gallons of wort with a pre boil gravity of 1.050, taken with a refractometer. He boiled for an hour down to roughly 6 gallons. His expected OG was 1.067 but it was 1.054 measured with a hydrometer. Temperature was close to 60F. Every calculator I found has said that concentrating 1.050 wort from 8 gallons to 6 should result in 1.067.
We checked his refractometer and hydrometer with distilled water to make sure they were accurate. We also hooked the chiller back up to the hose to make sure it wasn't leaking into the wort.
We're pretty baffled. Concentrating wort shouldn't be effected by some sort of process error, right? It's a simple formula. We had to have measured wrong either pre boil or post but I can't figure out how. Any ideas?
My friend brewed yesterday, collected 8 gallons of wort with a pre boil gravity of 1.050, taken with a refractometer. He boiled for an hour down to roughly 6 gallons. His expected OG was 1.067 but it was 1.054 measured with a hydrometer. Temperature was close to 60F. Every calculator I found has said that concentrating 1.050 wort from 8 gallons to 6 should result in 1.067.
We checked his refractometer and hydrometer with distilled water to make sure they were accurate. We also hooked the chiller back up to the hose to make sure it wasn't leaking into the wort.
We're pretty baffled. Concentrating wort shouldn't be effected by some sort of process error, right? It's a simple formula. We had to have measured wrong either pre boil or post but I can't figure out how. Any ideas?