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7
votes
2answers
916 views

Refractometer - what exactly can it measure?

I am using a refractometer to determine gravities. I am aware of course that values measured need to be corrected depending on OG of the fermenting batch. What I don't know is, what kind of sugars am ...
3
votes
2answers
151 views

How to calibrate a refractometer

What's the best method for calibrating a refractometer? I've been using my cheapo refracto to take pre- and post-boil readings, but I also check with a hydrometer because I don't trust it yet. The ...
2
votes
3answers
2k views

Can a refractometer be used for testing final gravity?

Can you use a refractometer to test final gravity?
1
vote
3answers
171 views

How precisely can you read your refractometer

I do not have a refractometer and am considering buying one. My own concern is how precise you can get the readings. How many brix are you plus or minus when you do a reading? Is it as precise as a ...
1
vote
1answer
281 views

Can I retroactively deterimine my OG with a refractometer?

Brewed a big Belgian beer last week. And using my refractometer (poorly, as it turns out), I wasn't able to get a solid reading of the OG. Now a week later I've taken a sample of the beer and want to ...