Treat 1or2 litres then add that to the bulk?

WishboneBrewery · Post by **WishboneBrewery** » Fri Jul 10, 2009 9:52 am

Is it possible to dissolve/ boil a couple of litres with gypsum etc in it and then add this to the bulk of the liquor?

Is this what I saw Chris doing with his hand blender on the Youtube vid?

I'm going to give water treatment a go tomorrow as per the Yorkshire water report and Grahams water Treatment calculator (very soft water area Keighley)

Post by **Aleman** » Mon Jul 13, 2009 8:55 am

I never have any issues with getting gypsum to dissolve. Looking at my data books (Which are somewhat out of date) It states that gypsum is soluble to 2570ppm in cold water (Another source state 2.4g in 1L which is more or less the same thing) . . . However I suspect the critical factor is the existing level of calcium in the liquor . . . if this is high then there may be this issue of getting it to dissolve . . . I don't know because I have a calcium level of 16-18ppm.

The really fun thing with gypsum is that the solubility decreases as the temperature gets warmer (Albeit only by 400-500ppm). So if you are adding 5-8g of gypsum to the liquor you will struggle to get it dissolved in a litre of liquor . . . but it would be much easier in 10L

WishboneBrewery · Post by **WishboneBrewery** » Mon Jul 13, 2009 3:53 pm

Thanks guys, the details help

For my brew I ended up crushing the lot up together in a pestle and mortar then making a watery suspension before adding it to my sodium-met treated water in the boiler... everything seemed to dissolve very well

I tested out the same amounts in a small pan but was left with a heck of a lot of sediment, so ended up answering my own question in a round-a-bout way.

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Treat 1or2 litres then add that to the bulk?

Treat 1or2 litres then add that to the bulk?

Re: Treat 1or2 litres then add that to the bulk?

Re: Treat 1or2 litres then add that to the bulk?