speedie wrote:28.8x13.25/4.95=76%
this is a good figure
but i still find it hard to fathom this if you are leaving 1016 in the grain bed after rinsing
speedster
I don't know, nor do you, if I leave SG 1.016 in the grain bed after sparging. I've never measured it, nor do I ever leave much volume in the grain bed. It's totally drained as far as practical, particularly as I sparge rather slowly. It can take me 1½ hours to do my batch sparging. I don't do high speed run offs. Thus my grain bed drains very well. I'd be surprised if I leave more than about ¼ litre, apart from what's absorbed by the grain itself. I'd be even more surprised if what I leave behind is SG 1.016.
And, don't forget, even with fly or continuous sparging, the grain retains liquid, so we never totally extract all the sugars from the grain.
Having said all that, if you now acknowledge my extraction of 76% on your calculation is a "good figure", you must also surely acknowledge that batch sparging is a valid alternative method of running off a mash?
As to your accusation of "belittling", I don't accept I am. I think I have been one of the most civilised in my responses to your posts, on this forum, and the other one.
Also, be aware I worked as a Claims Manager doing legal work on major personal injury claims, so I am very used to well structured logical argument progression and evaluation of evidence. That's all I am trying to do here, difficult as it may be on occasion.