The rough formula from
this thread is:
- Code: Select all
Out = ( (Inp/Mi) + Cb) / (1 + 1/Mi)
where
Inp = Input material's elemental composition
Mi = Input material's Purity Multiplier
Cb = Compost Bin's elemental composition
So let's just assume for the sake of convenience that you had a 100% lead compost bin. You're result would be 12.5/12.5/12.5/62.5 - 25% (3.25)
Now let's take a slightly more realistic example. Let's say our compose bin is 18/18/18/46 (8%, doable with very good foragables), and we chuck in some 0% input. Then we'd get output that looks like this: 21.5/21.5/21.5/35.5 - 2% (1.18)
Now let's see what happens when we throw in some easy-to-find 4% foragables, say 20/20/20/40: 18.85/18.85/18.85/43.46 - 6% (1.55)
Just to round things out, let's see what we get when we put in crops that exactly match the compost bin: 18/18/18/46 - 8% (1.71) - exact same
Now let's try some slightly enhanced input, say from crops we grew with our 8% humus. Let's call it 17/17/17/49 (10%). Our output would then be 17.66/17.66/17.66/47.03 - 9% (1.78)
Finally, let's see what happens when we put some pre-patch super food into our 8% bin. Let's call the input 0/0/0/100 (100%): 16.36/16.36/16.36/50.91 - 12% (2.07) - damn...
So here's what all of this means:
A high quality compost bin will give 25% of it's purity to 0% input.
The compost bin's purity is an effective soft cap on the purity of the output.
It is a waste of resources to use input that is much higher purity than the bin.
Why the heck do I spend my lunch break making spreadsheets? Can anyone explain this?
