Gravity measurement and hydrometer accuracy?

[fatbloke]

I understand that when checking OG etc then the liquid/must should be at 20 degrees for the most accurate measurement.

So if your must production (mead and similar) requires heating, should I be waiting for it to cool to exactly 20 C or is it OK to take a measurement if it's above.

I'm wondering this because if you're using turbo yeasts you are often mixing the must at 30 or 40 degrees C or with mead most recipes (despite the ever present "boil or not to boil" argument) suggest heating the honey/water and then skimming (is that really necessary if the honey has been pasturised??).

So what's the best advice/what would you do ???


regards

John the fatbloke

[lockwood1956]

Use the Winesathome Hydrometer temperature correction chart

http://www.winesathome.co.uk/downloads/calculator.htm

regards
Bob

[fatbloke]

Use the Winesathome Hydrometer temperature correction chart

http://www.winesathome.co.uk/downloads/calculator.htm

regards
Bob

Cheers for the tip Bob - it does seem that there's lots of stuff here that I'm missing!

Also, forgive me for being stupid, obviously I need to use the "hydrometer correction" part, but what do I actually need to put in where (apart from changing from degrees F to degrees c) ?

TVM

regards

John the fatbloke

[lockwood1956]

In the box next to hydrometer correction you put the temperature, and it calculates How much you need to adjust your readings

[fatbloke]

In the box next to hydrometer correction you put the temperature, and it calculates How much you need to adjust your readings

Ah, so I was being thick then !

TVM for the reply Bob, I'm due to run up a mix over the weekend so I can try it them.

regards

John the fatbloke