Supply Requisition Form

[Steve Killen]

On Wed, Feb 15, 2012 at 10:23 AM, Steve Killen <steven.f.killen at gmail.com>wrote:

>
>
> On Wed, Feb 15, 2012 at 12:45 AM, Clinton Ebadi <clinton at unknownlamer.org>wrote:
>
>> Steve Killen <steven.f.killen at gmail.com> writes:
>>
>> > On Sat, Feb 11, 2012 at 11:23 PM, Clinton Ebadi <
>> clinton at unknownlamer.org>
>> > wrote:
>> >
>> >
>> >     p.s. remind me to add the buffer 5.2 and also to check the pH AT
>> ROOM
>> >     TEMP (fun fact: the 5.2ish target pH is at room temp, and at mash
>> temp
>> >     is something like 0.3-0.5 lower ... that explains that then!).
>> >
>> > So, I did some more reading, and it looks like until we get an
>> electronic pH
>> > meter, it doesn't make a huge impact if we use hot wort or room temp
>> wort as
>> > long as we factor in the pH change related to temperature (~0.35
>> difference).
>> > The electronic meters are apparently calibrated at room temp, though,
>> so they
>> > need to be kept at that state to function well. It'll be good practice
>> to test
>> > a sample at room temp, and I agree that we should begin recording both.
>> But
>> > unless we can cool the sample in less than 5 minutes, it'll be useless
>> in terms
>> > of adjusting mash pH further on the fly using room temp pH data.
>>
>> The note was more to the effect: aha, *that's* why the mash pH was
>> 4.8/4.9 -- it's actually supposed to be that at mash temp!
>>
>
> I initially thought that as well. But Palmer's nomograph shows that at
> room temp, ideal pH starts at 5.4--and other sources (Strong, Papazian)
> reflect that increase at room temp. They use 5.2 as the ideal because mash
> temp is what what homebrewers are usually measuring pH at.
>
>
s/at 5.4/at 5.6/, but the point holds.


>
>
>>
>> --
>> unknownlamer: Hail Satan
>> unknownlamer: And do drugs
>> urbanbohemiac: are you wearing underwear
>>
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>>
>>
>
>
> --
> Steven F. Killen <steven.f.killen at gmail.com>
> | elvestinkle @ twitter
> | pursuing.calefaction.org
>
> Etsi provectus in sententiis sis
> Esse parvulus in spiritus debes
>



-- 
Steven F. Killen <steven.f.killen at gmail.com>
| elvestinkle @ twitter
| pursuing.calefaction.org

Etsi provectus in sententiis sis
Esse parvulus in spiritus debes
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