Specific Gravity how do you calculate?

LordViykor · Dec 20, 2008

I see on the Food Standards Australia website the the nutrition panel calculator asks for the specific gravity.

How can you calculate this? I do have a hydrometer from my home brewing days but the sauce is too thick to gauge a reading.

Is this reading necessary?

bentalphanerd · Dec 20, 2008

The Food Standards Calculator will give a Specific Gravity reading once you've put all your ingredients in.

http://www.foodstandards.gov.au/thecode/nutritionpanelcalculator/

LordViykor · Dec 20, 2008

bentalphanerd said:
The Food Standards Calculator will give a Specific Gravity reading once you've put all your ingredients in.

http://www.foodstandards.gov.au/thecode/nutritionpanelcalculator/

Thanks Bent,

I thought I had to work it out manually like the serving size and servings per package.

peter pepper · Dec 21, 2008

LordViykor said:
I see on the Food Standards Australia website the the nutrition panel calculator asks for the specific gravity.

How can you calculate this? I do have a hydrometer from my home brewing days but the sauce is too thick to gauge a reading.

Is this reading necessary?

if you wanted to do this manually you just need a different hyrdometer. your one for brewing is different than what you would need.

AlabamaJack · Dec 22, 2008

all you have to do is weigh it, then weigh the same volume of water in the same container and divide the weight of the product by the weight of the water?...the shortcut is to assume the SG of water = 1 and if the product is 2 times as heavy as the same volume of water, the SG would be 2...

specific gravity of water = 1000 Kg / M^3 (1000 kilograms per cubic meter...this is of course at 1 atmosphere pressure and 4 degrees C (waters maximum density))...once you do the math, the SG number becomes unitless and is just a number....therefore you can simply divide the weight of your product per unit volume by the same unit volume weight of water...

cheezydemon · Dec 22, 2008

Ask an engineer!lol. So....... WHY THE HELL AREN'T YOU HOMEBREWING ANYMORE???????lol.

Sickmont · Dec 22, 2008

cheezydemon said:
Ask an engineer!lol. So....... WHY THE HELL AREN'T YOU HOMEBREWING ANYMORE???????lol.

He's too busy canning.

DEFCON Creator · Dec 22, 2008

Sickmont said:
He's too busy canning.

That just doesn't sound right. :shocked:

As for specific gravity, I use the old school calculation. How many beers, specifically, does it take until gravity takes hold, and forces my face onto the ground.

LordViykor · Dec 23, 2008

AlabamaJack said:
all you have to do is weigh it, then weigh the same volume of water in the same container and divide the weight of the product by the weight of the water?...the shortcut is to assume the SG of water = 1 and if the product is 2 times as heavy as the same volume of water, the SG would be 2...

Thanks AJ, I'll do that and see how it compares.

AlabamaJack · Dec 23, 2008

DEFCON Creator said:
As for specific gravity, I use the old school calculation. How many beers, specifically, does it take until gravity takes hold, and forces my face onto the ground.

been there, done that at least once :lol:

LordViykor said:
Thanks AJ, I'll do that and see how it compares.

seems I did an experiment exactly on that in physics lab when I was in junior high school....we used a brass ball and another ball (same size) of different material. We knew the specific gravity of the brass ball and weighed it...then we weighed the other ball which was higher...since volume was the same, the density had to be different because of the weight deltas thus a different SG...then knowing the SG of water, you used the weights and the known SG of Water (1) and the SG of Brass, we figured the SG of the unknown and identified the material it was made of...great little learning exercise for kids...

wordwiz · Dec 23, 2008

AJ,

And that material was????

Mike

wordwiz · Dec 23, 2008

BTW, was this experiment back in the mid-late '70s? There were a lot of brass monkey who lost important body parts up here during a couple of those winters.

Mike

QuadShotz · Dec 23, 2008

My conclusion is thus: Drunken Brass Balls are like, Heavy, man.

AlabamaJack · Dec 24, 2008

wordwiz said:
AJ,

And that material was????

Mike

turned out to silver

wordwiz said:
BTW, was this experiment back in the mid-late '70s? There were a lot of brass monkey who lost important body parts up here during a couple of those winters.

Mike

I remember those cold winters but this was in the early 60s...

QuadShotz said:
My conclusion is thus: Drunken Brass Balls are like, Heavy, man.

Correct...hey dude...thats heavy...

Sickmont · Dec 24, 2008

DEFCON Creator said:
How many beers, specifically, does it take until gravity takes hold, and forces my face onto the ground.

last time i managed to remember how to count while drinking, it was at least 24 or so....

texas blues · Dec 24, 2008

From now on all questions relating to specific gravity, beer, chicks, and general silliness will be deferred to the Magic 8 Ball. All the signs point to YES!

http://en.wikipedia.org/wiki/Magic_8-Ball

Cheers, TB.

Specific Gravity how do you calculate?

Banned