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Post by Stephen on May 27, 2018 12:05:24 GMT -5
Hello! So I've wanted to pick up a final gravity hydrometer for a while now so I can more easily see and judge the FG for my beers. As opposed to regular hydrometers they have a scale that only goes from 0.098 - 1.020. They're super handy to not have to squint so hard to read and to be able to tell in back to back samples over a few days if there is still attenuation happening. They're actually difficult to find here and in the US I have seen them at morebeer and NB but in the $20 range. Anyway, I found some for a great price here in Canada and am going to hit the button to order 2-3 for myself tomorrow. Price with tax is $5.64/each and then theres a $10 shipping charge which I would divide between the number of units. Anyway see the link and if you want one just let me know before tomorrow morning at 10am. Cheers www.noblegrape.ca/products/finishing-hydrometer-high-accuracy
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Post by Christy on May 27, 2018 14:35:54 GMT -5
I'd go for two. Thanks!
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Post by gdbrewing on May 27, 2018 20:38:34 GMT -5
Hi Steve. I would take 2 as well
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Post by gdbrewing on Nov 9, 2018 9:04:32 GMT -5
I just thought I would follow up on the Final Gravity Hydrometers we received. I believe the calibration instructions written on the box are incorrect. My instructions read “subtract 1 point from all readings for every point below 1.000” (when calibrating in distilled water). I believe we should be adding the point differential in these cases. My hydrometer in fact reads .998 when measuring distilled water. If I was measuring wort with a FG of 1.010 with my hydrometer, I would expect to get a reading of 1.008. Therefore I would need to ADD .002 to that reading.
Christy/Steve - Did your instruction read the same? Do you concur? Have you been doing this already?
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Post by Christy on Nov 9, 2018 9:17:07 GMT -5
Yes, my instructions were the same and they are incorrect. I've only calibrated one and it also read 2 points low, so I add .002 to any reading from it.
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Post by Stephen on Nov 9, 2018 9:26:08 GMT -5
Same although one I have reads high so I do have to subtract for that one. Basically, with distilled @59f (I believe that’s what these are calibrated for...remember, temperature of the water is the most important factor for readings) then whatever you need to add or subtract to get to 1.000 you do the same with your finished beer readings, compensating for the calibration correction BEFORE you punch it into a hydrometer calculator to compensate for your sample temp.
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Post by gdbrewing on Nov 9, 2018 9:34:15 GMT -5
Good. I was getting concerned that those 4 semesters of algebra (one repeated), 3 of calculus, 2 of functions, may have just been a big waste of time. Now if I could just get this metric stuff figured out.
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