Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In with Google Sign In with OpenID Sign In with Twitter

Categories

In this Discussion

Note to Visitors: Many posts have uploaded pictures that are only visible to logged in members. You may sign up for free and you will be able to see them.

Top Leaders

Top Posters

Who's Online (0)


Feeling generous? Help keep HBF running.
Get the sticker that shows them how you really feel.
using a refractometer for beer
  • frydogbrewsfrydogbrews
    Posts: 44,679
    refractometers are a great way to take gravity readings of your wort. the problem is that unlike a hydrometer, they don't give accurate readings once alcohol has been created. to do this you need some fancy math.
    some of the brewing software has this built into it, but for folks that don't have those programs, you can use this link to punch in your brix amounts and get proper readings.
    http://onebeer.net/refractometer.shtml
    an OG readings is needed to properly calculate this, so don't forget that part.
  • frydogbrewsfrydogbrews
    Posts: 44,679
    actually, i just used this and it told me my latest ipa was 9.5% abv and by hydrometer readings it should be 8.6%

    anybody used these much?
  • ThymThym
    Posts: 104,269
    i use a refractometer and have gotten very good correlation when i spot checked with a hydro. i have a spreadsheet that i use for the fancy math. I've shared it on other threads - it's my recipe calculator also.
    The only thing between me and a train wreck is blind luck..... - Kenny
  • ThymThym
    Posts: 104,269
    Fry, if you still have your readings, i'd like to hear your results after plugging it them in here.

    http://homebrewforums.net/software/refractometerwizard/publish.html
    The only thing between me and a train wreck is blind luck..... - Kenny
  • ThymThym
    Posts: 104,269
    FYI - i just ran some comps, while the numbers are similar, i do get different results than those from the website in the original link.

    I'm not saying which set of values is more accurate, but my numbers have never steered me wrong.
    The only thing between me and a train wreck is blind luck..... - Kenny
  • frydogbrewsfrydogbrews
    Posts: 44,679
    Lakewood said:

    Fry, if you still have your readings, i'd like to hear your results after plugging it them in here.

    http://homebrewforums.net/software/refractometerwizard/publish.html



    yep, i have everything written down in my notebook at home.
    i will put them in after work and let you know how it goes

  • ThymThym
    Posts: 104,269

    Lakewood said:

    Fry, if you still have your readings, i'd like to hear your results after plugging it them in here.

    http://homebrewforums.net/software/refractometerwizard/publish.html



    yep, i have everything written down in my notebook at home.
    i will put them in after work and let you know how it goes



    @frydogbrews any luck?
    The only thing between me and a train wreck is blind luck..... - Kenny
  • frydogbrewsfrydogbrews
    Posts: 44,679
    Lakewood said:

    Lakewood said:

    Fry, if you still have your readings, i'd like to hear your results after plugging it them in here.

    http://homebrewforums.net/software/refractometerwizard/publish.html



    yep, i have everything written down in my notebook at home.
    i will put them in after work and let you know how it goes



    @frydogbrews any luck?

    i wrote the numbers down around here somewhere, hang on
  • ThymThym
    Posts: 104,269
    Ha ha :) happens to me all the time, even with fancy spreadsheets.
    The only thing between me and a train wreck is blind luck..... - Kenny
  • CurlyFatCurlyFat
    Posts: 62,312
    I use a refractometer during the brew day (mashing, sparging, all pre-boil stuff). For actual SG and FG readings I only trust my hydro.

    I did learn that ANY amount of water left in whatever you use to drop onto the refract will greatly dilute the tiny sample. I made a 8% hefeweizen because of that once....


    Order some WD-40 from amazon and meet me at the dock --
    Thym

  • jlwjlw
    Posts: 16,417
    I'm thinking about buying this refractometer. What do you guys think?

    http://www.homebrewing.org/Brix-Refractometer-w-ATC-Automatic-Temperature-Control-_p_1776.html

  • scoobscoob
    Posts: 16,617
    I think I have the same one, I got it on amazon for like 20-25 dollars
    Jesus didn't wear pants
  • jlwjlw
    Posts: 16,417
    @azscoob does it work well? What about calibration?
  • scoobscoob
    Posts: 16,617
    Lemme check it out
    Jesus didn't wear pants
  • scoobscoob
    Posts: 16,617
    Here is mine...

    It calibrates easily, and so far no problems with readings, I have cross checked it against hydro on several occasions.
    image.jpg
    2560 x 1920 - 796K
    Jesus didn't wear pants
  • C_BC_B
    Posts: 77,872
    azscoob said:

    Here is mine...

    It calibrates easily, and so far no problems with readings, I have cross checked it against hydro on several occasions.


    Same one I have from amazon I think. I've got a thread around here about it somewhere... Anyway, love it. No problems. Every time I've checked against the hydro it's been correct. The scale on mine is hard to read though, very small. It works and focuses fine but that part does annoy me.
    "On it. I hate software." ~Cpt Snarklepants
  • ThymThym
    Posts: 104,269
    It helps to read it with a good diffuse light source. If I don't point mine right at a florescent light it's usually pretty hard to read the tiny font.
    The only thing between me and a train wreck is blind luck..... - Kenny