Post #2 made 11 years ago
I asked a similar question here about using flaked corn in section Y of the biabicus. Palmer explains the theory here.

The hard bit i think is finding the ppg for different extracts. Its easy for grains but maybe you can find it on the individual maltster web site like Breiss for eg.

I hope I got that info right otherwise im sure someone will correct me.

Wouldn't it just ne easier to use grains Safebrew? :lol:
Last edited by nosco on 22 Dec 2014, 15:59, edited 1 time in total.
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Post #3 made 11 years ago
Thanks for the reply nosco... busy holiday season is here.

I understand the concept of how to calculate ppg and what expected gravity should be, but extract that contributes 36 ppg has an expected yield of 100%. You put one pound of LME into 1 gallon of water and you get x amount of volume at 1.036 gravity. How do you make that happen in BIABicus? Do I simply set FGDB to 100 in sect Y? What do I put for MC? For LME? For DME?

Thanks again for the help?

Post #4 made 11 years ago
The way I understand it (which is possibly not at all sorry) is that 100% in sect Y is for table sugar amd dex for example. ie sugars that are 100% fermentable. LME and the like are not 100% fermentable, which is how you get a number like 36ppg. LME might be almost totallyade of sugars but not all of those sugars are fermentable ones.
MC is moisture content which for LME would be 0 or maybe 1? Im just guessing.
If you have beer smith it does actually have a pretty complete list of values for different malt extracts and you can download them for different brands.
I think thats probably the best answer I can gibe away from a computer.
Maybe some one who really knows what they are talking about can tell us both the rigjt answer lol.
Ps I will be pretty stoked if I am correct. I may actually be learning something after all o_0
"Gentleman, when I first started Reynholm Industries, I had just two things in my possession: a simple dream, and six million pounds.
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Post #5 made 11 years ago
Safebrew - Nosco is correct in that you could just leave the default values for LME (they seem to give an average range of 32-38ppg).

Grain, which yields about 80% of its weight as various "sugars" (the other 20% will be things like protein & husk material etc.), and has a moisture content (MC) on average of 4% will give (on average) 35-36ppg.
Pure cane sugar which will yield the most fermentable product by dry weight is 100% with 0% MC and that has a ppg of 46.

LME which is again fully converted (not fully fermentable by the way, as there will always be dextrins etc. that yeast cannot metabolise) will be 100% but it has a lot more water in it than grain, table sugar, or even dry malt extract (DME).
If you wanted to be a perfectionist you could put LME as 100 in FGDB and MC around 22 to yield 36ppg, however, the only true way to know what your LME yields is to dissolve a known quantity in a known volume and measure the gravity. You could then alter the BIABacus to suit the yield.
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Post #6 made 11 years ago
Ok so I was way off plus I was confusing LME for Light malt extract :idiot: :headhit: :lol:
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