Yep, those values are HCO3MapperMatt wrote:OK, so in the regional profiles you provided in your talk it looks like alkalinity is being expressed as HCO3. I couldn't find the source for this table to check but that would certainly make more sense....Check how alkalinity is expressed. It can be put in tables as HCO3 as well as CaCO3.
Water Treatment
Re: Water Treatment
Ali
BJCP National Judge
BJCP Assistant Regional Director (North-East/Europe)
American Homebrewers' Association International Subcommittee
Organizer, National Homebrew Competition
CBA UK Competition and Training Coordinator
http://serenbrewing.com
BJCP National Judge
BJCP Assistant Regional Director (North-East/Europe)
American Homebrewers' Association International Subcommittee
Organizer, National Homebrew Competition
CBA UK Competition and Training Coordinator
http://serenbrewing.com
Re: Water Treatment
I attempted water treatment in my last brew, following receipt of my water information from Bristol water.
The CRS calculation was straightforward, I used the Brupaks website to do it manually and obtained a similar figure from one of the calculators on Ali's handout - think it was the craft brewers one but could be mistaken.
However, when it came to the DLS additions, only this one calculator accomodated DLS rather than Gypsum and other salt additions which is why I chose this one.
Brupaks stated to use DLS in the mash tun (based on mash tun water volume) and in the boiller, to use the whole brew length - mash tun water volume. The calculator stated something different (based on starting boil volume). I went with the calculator as the Brupaks seemed overkill as not all the liquid in the mash tun will end up in the boiler.
I did a quick search on JBK and found someone was asking a similar question to our mate, GW. He seemed to completly ignore the question in his answer which was no real surprise.
Can anyone shed some light on this for me as well?
The CRS calculation was straightforward, I used the Brupaks website to do it manually and obtained a similar figure from one of the calculators on Ali's handout - think it was the craft brewers one but could be mistaken.
However, when it came to the DLS additions, only this one calculator accomodated DLS rather than Gypsum and other salt additions which is why I chose this one.
Brupaks stated to use DLS in the mash tun (based on mash tun water volume) and in the boiller, to use the whole brew length - mash tun water volume. The calculator stated something different (based on starting boil volume). I went with the calculator as the Brupaks seemed overkill as not all the liquid in the mash tun will end up in the boiler.
I did a quick search on JBK and found someone was asking a similar question to our mate, GW. He seemed to completly ignore the question in his answer which was no real surprise.
Can anyone shed some light on this for me as well?
James
BJCP Certified Judge
BJCP Certified Judge
- MapperMatt
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Re: Water Treatment
Bim, I noticed this a few months ago and have switched to doing it the Brupaks way. IE DLS is calculated based on the total mash liquor not just the boil volume. To be honest I have not noticed a great deal of difference.Brupaks stated to use DLS in the mash tun (based on mash tun water volume) and in the boiller, to use the whole brew length - mash tun water volume. The calculator stated something different (based on starting boil volume). I went with the calculator as the Brupaks seemed overkill as not all the liquid in the mash tun will end up in the boiler.
I did a quick search on JBK and found someone was asking a similar question to our mate, GW. He seemed to completly ignore the question in his answer which was no real surprise.
Can anyone shed some light on this for me as well?
Paul, you are right, the numbers in the CBA spreadsheet do not stack up. As you say, Brupaks recommend using CaCO3 * 0.4 to obtain Ca levels for DLS calculations. Looks like I will be amending my spreadsheet.In real life I measure alkalinity on the day using a salifert kit to get alkalinity as CaCO3, then multiple that result by 0.4 to get a Ca number for by DLS addition. If my water report happened to be accurate for that day, using "Hardness as Ca" for DLS would significantly underestimate the DLS addition.
Does anyone else have any thoughts on this? For info link to brupaks page is here: http://www.brupaks.com/water%20treatment.htm and link to CBA water treatment spreadsheet is here:https://docs.google.com/spreadsheet/ccc ... aakE#gid=1
Re: Water Treatment
I'd like to add CBA fact sheet number 1 which is James McCrorie's advice from Hilary Kane of Murphy's Lab. This recommends adding all the DLS to the grist for the brew length. Brew length seems to still be Murphy's current advice (pdf).
What I haven't found is any theory on the recommended Ca levels i.e. is "180" Pale Ale ideal for the mash, hop extraction/flavour, yeast fermentation?
Anyway, I guess the rule of thumb is "insufficient Calcium has an adverse effect, a little too much won't matter".
What I haven't found is any theory on the recommended Ca levels i.e. is "180" Pale Ale ideal for the mash, hop extraction/flavour, yeast fermentation?
Anyway, I guess the rule of thumb is "insufficient Calcium has an adverse effect, a little too much won't matter".
When a man is tired of beer, he is tired of life; for there is in beer all that life can afford