Just noticed this, similar to something I mocked up last year. I used a slightly different method, but have actually written it up in PHP if that's helpful. It wouldn't be hard to integrate that in to the calculator, though you might want to use GSL or some well-known library for the simplex...

Hello, If you're still looking for testers, please add me in. I can't promise too much time though - I break software for a living so don't want to spend all evening doing so too. That's why I'm taking up brewing instead! Cheers, Tim

Do not use that chiller! The Starsan (which is acidic) will have destroyed it. Copper oxides are green, hence the colour of the water. They're also very toxic in any quantity. Unless you can open it to clean and check, please assume it is no longer food safe.

The number stays consistently wrong regardless of what you do in there :) . The error appears to be in the Javascript shown it the screenshot (pretty printed). The "batchsize" global variable is in gallons in my editor regardless of the fact that I'm working in litres. As it assumes the...

Same issue here. Recipe viewer says 101B for my recipe, editor says 38B. Both the separate calculator, and doing by hand support the 101B figure. Changing to imperial units corrects the error. Looks like unit confusion in the editor.

Hi all, I'm getting started in the world of brewing (all grain off the bat - extract costs a fortune here) and the scientist in me wants to experience all of the different common flaws so I can identify them down the line. I'm wondering whether anyone has a good way to reliably produce each...

Update - now does bicarbonate alkalinity. Doesn't do slaked lime or lye yet, as these are based on precipitating other salts and interact with the other additions in non-linear ways. UI concept image attached - would just be a checkbox for each salt, enable/disable the fields on click, and use...

Right, I've implemented a first cut version of an optimisation routine in PHP. It handles optimising salt additions for the stable, linearly calculated ions (Ca, Cl, Mg, etc). There are a couple of limitations: Doesn't handle alkalinity - this doesn't seem to be a linear approximation. I'd...

A useful feature would, rather than fiddling with the salts, be to have the optimum addition to match a profile pre-calculated. I've done some linear optimisation before, and this is a classic case. UI: User checks boxes for which salts are available for use. Could either start with all...