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Author Topic: Please ck my math  (Read 1208 times)

Offline BrewBama

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Please ck my math
« on: April 16, 2020, 01:42:24 pm »
Am I calculating the amount of Kmeta I am adding to rid the water of chlorine correctly?

I normally use distilled water and build from scratch therefore chlorine and chloramine are a non issue for me. However, the grocery has been unable to maintain a reliable stock of distilled water, I don’t operate a distillery, and I feel like those folks who require distilled water medically should get the limited supply on the shelves. So, that leaves me with New Market AL tap water.

Based on a photo of a package (link below), Campdem tablets = 550 mg KMeta which will treat 20 gal of chlorinated water. 550/20=27.5 mg per gallon. 1000 mg = 1 gram. So, .0275 grams per gal x 8.5 gal = .23 grams. I round up to .3

https://labelpeelers.com/potassium-campden-tablets-100-ct/

Edit:  based on post #6 below, in retrospect I imagine rounding up was a mistake.

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« Last Edit: April 23, 2020, 02:05:49 pm by BrewBama »

Offline denny

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Re: Please ck my math
« Reply #1 on: April 16, 2020, 01:57:10 pm »
Seems right to me
Life begins at 60.....1.060, that is!

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Offline Richard

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Re: Please ck my math
« Reply #2 on: April 16, 2020, 02:15:27 pm »
Yeah, the math is fine. You are treating 8.5 gallons instead of 20, so you only need 8.5/20 of the 0.55 gram tablet. 0.55*(8.5/20) = 0.23. I would round it up to 0.275 and use a half tablet.
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Offline BrewBama

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Please ck my math
« Reply #3 on: April 16, 2020, 02:41:00 pm »
I have powdered Kmeta so I’m trying to get a weight. I may round up a bit though.

Cheers!

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« Last Edit: April 16, 2020, 05:53:57 pm by BrewBama »

Offline hopfenundmalz

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Re: Please ck my math
« Reply #4 on: April 16, 2020, 06:43:11 pm »
I have powdered Kmeta so I’m trying to get a weight. I may round up a bit though.

Cheers!

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The powder is more active, as there is no binder. Look at the low oxygen page for more info.
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Offline BrewBama

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Re: Please ck my math
« Reply #5 on: April 18, 2020, 06:39:22 am »

The powder is more active, as there is no binder. Look at the low oxygen page for more info.

I may have learned that the hard way. In another thread I am dangling a 1967 penny in my beer to rid the evil from it thru alchemy.


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