Potassium Metabisulfite content

[ecmik]

Hi! I'm currently translating the Brewfather software to Swedish, and we want to add Potassium Metabisulfite to the ingredients list (sodium metabisulfite is already an ingredient in Brewfather if it helps). The developer wants to know the content of potassium and sulfite in ppm per gram, do anyone of you guys know? I've tried searching for it, but found nothing relevant!

 

[Big Monk]

Hi! I'm currently translating the Brewfather software to Swedish, and we want to add Potassium Metabisulfite to the ingredients list (sodium metabisulfite is already an ingredient in Brewfather if it helps). The developer wants to know the content of potassium and sulfite sulfate in ppm per gram, do anyone of you guys know? I've tried searching for it, but found nothing relevant!

I’m assuming you are using this as an antioxidant? If so, you do have to make the assumption that all the metabisulfite will react exclusively with oxygen, and the approximate content of potassium and sulfate would be 35 mg/l and I believe 87 mg/l per 100 ppm Potassium metabisulfite, respectively.

I have the calculations but not handy at the moment. I’d urge you to do the math and get the exact numbers before you commit anything to the software.

 

[ecmik]

Thank you very much! I will forward this to the developer and see what he says. If possible, could you even pass me the calculations for me to give him as well?

 

[VikeMan]

I think you'd find the periodic table of elements useful.

 

[Big Monk]

Thank you very much! I will forward this to the developer and see what he says. If possible, could you even pass me the calculations for me to give him as well?

I don’t have them handy but it’s not a heavy lift, especially if he already has the calcs for Sodium metabisulfite. You need the separate masses of the meta plus the constituent parts so you can find the gram amounts contributed when you use X grams of meta.

It’s pretty straightforward stuff.

 

[ecmik]

Thank you very much! Much appreciated!