tag:blogger.com,1999:blog-2261525107149934458.post1622536228505686658..comments2023-08-17T06:55:36.859-04:00Comments on Woodland Brewing Research: Refractometer summary of equationsAnonymoushttp://www.blogger.com/profile/18109943319735098753noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-2261525107149934458.post-54858581957992624182013-02-23T11:16:20.741-05:002013-02-23T11:16:20.741-05:00Thanks for providing your opinion on this. Every ...Thanks for providing your opinion on this. Every tool has it's weakness. Sean's calculator attempts to correlate the refractometer to the hydrometer. These equations look at it a different way. They are based on physical models treating each tool as equal. The true is both tools have inaccuracy. <br />Historically hydrometers have been used for final gravity so that is what people know. For evaluating fermentation from a scientific perspective I find percent sugar by weight more valuable. Both tools are equally good at providing that information.Anonymoushttps://www.blogger.com/profile/18109943319735098753noreply@blogger.comtag:blogger.com,1999:blog-2261525107149934458.post-47301952373407117302013-02-23T08:23:10.972-05:002013-02-23T08:23:10.972-05:00In my experience it seems that final gravity measu...In my experience it seems that final gravity measured by refractometer is always few points up/down from what calculation predicts.<br />I measured a lot of SG/FG samples with refractometer and checked them with hydrometer. I used seanterrill's calculator to calculate FG (Brix) and I had to use different correction factor each time to correct reading to what hydrometer measured. <br /><br />I decided not to use refractometer for FG reading anymore (at least not as only measurement). <br />It is great tool for checking OG during the boil or for measuring starters OG, but for final FG hydrometer is still indispensable tool.. I am speaking about my experience with cheap e-bay refractometer, it could be that quality models are accurate.Anonymoushttps://www.blogger.com/profile/15234456347361302555noreply@blogger.com