Refractometer
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This is the one I use. I have Prime so it shipped for free for me. Its only brix but after looking into refractometers and how the accuracy of the gravity distorts at higher brix im not upset that brix is the only scale on it.
This is the one I use. I have Prime so it shipped for free for me. Its only brix but after looking into refractometers and how the accuracy of the gravity distorts at higher brix im not upset that brix is the only scale on it.
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I was looking at this one but was concerned about the warning that is not very acurate at higher gravities
http://www.ebay.com/itm/RSG-100ATCc...014?pt=LH_DefaultDomain_0&hash=item3382c02aae
http://www.ebay.com/itm/RSG-100ATCc...014?pt=LH_DefaultDomain_0&hash=item3382c02aae
JonGrafto
Well-Known Member
Go to http://www.homebrewfinds.com
They have one up today that is $21 shipped. It is the one I use for OG.
Remember that you cant use it to figure FG unless you use the factor conversion calculator.
Cheers.!
They have one up today that is $21 shipped. It is the one I use for OG.
Remember that you cant use it to figure FG unless you use the factor conversion calculator.
Cheers.!
Well its great for AG brewing when ur looking to see what the gravity is of the first/second runnings. Its also good for checking gravities pre/post-boil and then to determine if the gravity is stable after fermentation. It only uses a drop, maybe two instead of filling up ur thief several times when using the hydrometer.
Refractometers are also inaccurate after fermentation because the presence of alcohol so after fermentation when checking the FG, u should always use a hydrometer. But ive found it is still worth the investment since ive gone to AG batches.
Refractometers are also inaccurate after fermentation because the presence of alcohol so after fermentation when checking the FG, u should always use a hydrometer. But ive found it is still worth the investment since ive gone to AG batches.
Last month I got their $29.90 which is supposed to be an ounce heavier than the $21 one. Don't know if weight makes any difference to you. Otherwise they look very similar. The look of the scales may be slightly different too, who knows?
The SG scales on these are all off at the higher gravities. I really don't understand why that cannot be fixed once and for all. Come on now, next time you get 1,000,000 scales printed send the correct one...
To get the correct SG value:
Read the Brix and plug it in a calculator or look up the correct SG values on a printed out table. For lower gravities you could use the refractometer's internal SG scale.
You can also use a calculator or print out an alcohol-corrected scale for determining FG.
That's what got me looking to buy one but check out the item description.it's a linear formula so it will be inaccurate
INACCURACY OF THE RSG-100ATCc TO BE AWARE OF! (a disclaimer)
Inaccuracy? What? Yes. This is the disclaimer that you should read before you buy. The other guys don't post this because they don't know any better! They just sell "stuff"...
Please be aware that this unit and the other cheap units sold on eBay have an internal flaw. What's the flaw? The Wort SG scale gradually becomes inaccurate the higher you go.
When the scale was conceived, it was done so using a simple formula - % Brix x 4 = Wort SG. For example, 10% Brix x 4 = 1.040 Wort SG, which is somewhat accurate. Move it out to 20% Brix and you have a problem - 20% x 4 = 1.080 Wort SG, but it's really 1.084 Wort SG! The scale becomes more in accurate the higher you go! Making an Strong American Ale or a Double IPA? Using this unit (RSG-100ATCc) could cause problems with higher gravities!
I bought this one and am highly pleased with it. http://www.brewhardware.com/refractometer
Bobby's equipment is top notch! I also bought a weldless sightglass with thermometer. It was a cinch to install and mark the levels with the vinyl numbers.
Bobby's equipment is top notch! I also bought a weldless sightglass with thermometer. It was a cinch to install and mark the levels with the vinyl numbers.
