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I've got a pair of PT100 RTD sensors from eBay with four pins and four wires. As far as I know, a true four wire RTD utilizes all four as sensor wires as opposed to the more common 3 wire for temperature measurement. It looks like what I have is actually a 3 wire with a ground, not a real 4...

I think you two have done the most work with pH strip accuracy on wort. Do you have any idea if the -.3 reading is specific to the colorphast strips or is it a generic chemistry that applies to ph indicator dyes exposed to wort? I just bought a bunch of Whatman 4-7 ph paper (cheaper than the...

I'm a molecular biologist who recently got into brewing because it's a lot of what I like about science - pressure + beer. Anyhow, I've been really interested in grain enzymatic activity at mash temps (in that they're nowhere near germination temps) and came up with a practical hypothetical...

I've been trying to figure out the exterior dimensions for the square-base 3 gallon better bottle (the only HBS on the island doesn't carry them or I'd take measurements myself). My current setup is good for 5 gallon batches with no secondary, but I'd like to be able to make some half batch big...