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Refractometer


Sticky Wicket

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They are worthwhile in my opinion. Affected by alcohol level and best for using on unfermented wort. No more accurate than hydrometer probably less if not used correctly and reading not adjusted for alcohol content.

Great for taking quick readings on brewday. You only need a few drops of liquid instead of enough to float your hydrometer and the small quantity on the glass stabilises to reading temperature in about 30 secs from boiling.

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Can they be used for FG at all?

 

I never trust mine for FG reading but you could if you had a fetish about only using a refractometer. I only use mine on brew day then use my hydrometer. It is a good guide to take a hydrometer sample and leave it sit out where you can monitor the approximate SG during fermentation.

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