Homebrewing - Beer, Mead, Wine, Cider

2257 readers

11 users here now

A community dedicated to homebrewing beer, mead, wine, cider and everything in between. If it ferments, bring it over here.

Share recipes, ideas, ask for feedback or just advice.

Some starting points for beginners:

Introduction to Beer Brewing

A basic mead primer

Quick and diry guide to fermenting fruit - cider and wine

Brewing software

founded 2 years ago

MODERATORS

[email protected]

Refractometers (self.homebrewing)

submitted 7 months ago* (last edited 7 months ago) by whaleross to c/[email protected]

5 comments fedilink hide all child comments

I ordered a cheap chinese optical refractometer from Amazon to use for convenience instead of a traditional hydrometer. It seemed accurate enough after calibration, I don't expect magic or lab results. Ballpark is fine by me.

I got suspicious when my cider and wine have kept stopping at 1.020-1.025 and nothing I whatever I tried would only make them bubble for another few days and reduce a couple of degrees Oe. So I did a reading with my hydrometer to verify. Yep, the SG for the cider ~1.000 and with the wine in negatives.

Checking out the refractometer it says it is for beer.

Is there a difference for wine and beer refractometers? Is is this refractometer, cheap chinese ones in general or is it me?

Cheers

Edit: twas me

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 4 points 7 months ago (1 children)

Refractometers are one of the most misunderstood tools in home brewing. The two biggest mistakes are using the sg side of a dual brix/sg scale (the conversion is non-linear, and the scale will likely become increasingly off between the two the higher the gravity), and using one like a hydrometer, ie simply subtracting final from original gravity. Instead, only use the brix side of the scale, and use a calculator such as this one to determine the actual specific gravity/abv once fermentation begins: https://www.brewersfriend.com/refractometer-calculator/ (don't worry too much about the Wort Correction Factor.) Do that, and your refractometer will be your best friend.

[–] whaleross 2 points 7 months ago

Thanks! I'll look into it!