Grain typical analysis
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skinfull
Grain typical analysis
Can anyone explain to me on a typical grain anyalsis what does As is and dry mean where you get 2 differant figures.
For a malt the analysis for extract is carried out on a sample of the grain, as received, after grinding at a given mill setting. The extract calculated from this sample is the as is figure.
A further sample is then ground and the loss on drying, typically at 105 centigrade, is determined.
The as is extract is then multiplied by 100 / (100 - loss on drying)
e.g if the extract as is is 290 and the loss on drying is 4.0% then the dry basis figure would be 290 x 100 / (100 - 4.0) =302
A further sample is then ground and the loss on drying, typically at 105 centigrade, is determined.
The as is extract is then multiplied by 100 / (100 - loss on drying)
e.g if the extract as is is 290 and the loss on drying is 4.0% then the dry basis figure would be 290 x 100 / (100 - 4.0) =302
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The Mighty Badger
That's about it.TMB wrote:So presumably the dry weight figure is calculated to allow direct comparison between different malts/grains and the 'as is' extract figure is the one we want when calculating efficiency & alcohol content
The moisture content (loss on drying) is also useful if you have the formula for calculating your strike heat. It takes more heat out of the strike liquor to heat say 100g of water than 100g of malt.
If you have bought crushed grain it is likely that the moisture content wil be higher than that stated and is likely to increase slightly over time.
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The Mighty Badger
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farleyman