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2
votes
3answers
103 views

Measuring SG on small (3.5l / 1g) batches

I do small batch brewing (3.5l-4l) and using hydrometer is a big pain for them, as I need to take very big amount of beer out to test it. I've learned to do OG readings with refractometer, but I get ...
5
votes
3answers
8k views

Can a refractometer be used for testing final gravity?

Can you use a refractometer to test final gravity?
3
votes
2answers
318 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
298 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
307 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 ...
7
votes
2answers
1k 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 ...