Quadricorn Posted November 9, 2015 Share Posted November 9, 2015 Can someone (PB2?) confirm that the coopers hydrometer is calibrated at 1.000 in 20degree demineralized water ? I have just been sent a replacement hydrometer since my first was all over the shop(think it had a leak or something) and its reading at 0.994 in the above setup. If the above is what it is calibrated at I think I'll have to trim the red tip a bit. Link to comment Share on other sites More sharing options...
Xenon Posted November 9, 2015 Share Posted November 9, 2015 I had to put a little piece of blu-tac on the top of mine to get it right. Guess there are some manufacturing tolerances either way with them... Link to comment Share on other sites More sharing options...
Otto Von Blotto Posted November 9, 2015 Share Posted November 9, 2015 These things seem to give a lot of people issues. False readings, leaks, etc. Glad I got a decent glass one... Link to comment Share on other sites More sharing options...
PB2 Posted November 10, 2015 Share Posted November 10, 2015 You want your hydrometer to read 1000 (1.000) in the water you use for brewing, making sure it's at a temperature relevant to your brewing temps (20C is good). As mentioned, a design feature of the Coopers Hydro, is that is can be calibrated by snipping bits of the red tip off. The scale, being stretched, is easier to read than most other hydros and it's more durable. Link to comment Share on other sites More sharing options...
Pilch Posted December 2, 2015 Share Posted December 2, 2015 I've got no idea if mine is completely accurate at my brew temperatures but it gives me the difference between OG and FG and, gives me an indication of when fermentation has finished, so it will do me for my basic brewing skills :-) Link to comment Share on other sites More sharing options...
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