Hi all,
I have just started using the hydrometer and think I understand it.
However, in another thread someone mentioned that I should always top up my demijohn after racking so that it is nearly full (to stop oxidisation). That is all well and good, but I am now confused how this will affect the hydrometer reading.
I usually end up with about four and a half bottle's worth of wine at the end of the process. So I lose a bottle and a half through racking.
Is there a bit of maths I could do to adjust the SG reading depending on how much I have to top up with water? For example, say after the first racking I have lost half a bottle's worth. I add same amount of water to top up. Now I take an SG reading. Can I apply some formula to that to get an accurate reading based on the volume of wine I have effectively replaced with water?
Any help most appreciated.
Ross
I have just started using the hydrometer and think I understand it.
However, in another thread someone mentioned that I should always top up my demijohn after racking so that it is nearly full (to stop oxidisation). That is all well and good, but I am now confused how this will affect the hydrometer reading.
I usually end up with about four and a half bottle's worth of wine at the end of the process. So I lose a bottle and a half through racking.
Is there a bit of maths I could do to adjust the SG reading depending on how much I have to top up with water? For example, say after the first racking I have lost half a bottle's worth. I add same amount of water to top up. Now I take an SG reading. Can I apply some formula to that to get an accurate reading based on the volume of wine I have effectively replaced with water?
Any help most appreciated.
Ross