Caustic solution
#1
Posted 17 May 2010 - 07:07 PM
#2
Posted 17 May 2010 - 07:09 PM
#3
Posted 17 May 2010 - 07:12 PM
thanks for the reply. Is there any reason why I couldn't/shouldn't mix up a 5% solution from the start and reuse it?Shelf life is very long. Whip up some high concentrate and store it, dilute to working strength (2-5%)MolBasser
#4
Posted 17 May 2010 - 07:37 PM
#5
Posted 17 May 2010 - 07:38 PM
#6
Posted 17 May 2010 - 07:57 PM
#7
Posted 17 May 2010 - 08:03 PM
#8
Posted 17 May 2010 - 08:08 PM
Is that really a measurement of something or are you pulling my chain here?Cleaning heavy soil, it should be over 100 millisemens.MolBasser
#9
Posted 17 May 2010 - 08:25 PM
You should trust basser on this .... Or read the following: https://www.coleparm...sist.htm&ID=392yeah, I had to look it up tooIs that really a measurement of something or are you pulling my chain here?
#10
Posted 17 May 2010 - 09:31 PM
Trust me, I chuckle every time I say that word. But, it is real.ETA: I did spell it wrong (big surprise) it is millisiemens.MolBasserIs that really a measurement of something or are you pulling my chain here?
Edited by MolBasser, 17 May 2010 - 09:33 PM.
#11
Posted 17 May 2010 - 10:08 PM
#12
Posted 17 May 2010 - 10:21 PM
#13
Posted 17 May 2010 - 10:42 PM
a ph of <2 or >12 is where you start to see major skin damage so this is not to be taken lightly. Does SNBC boost their caustic solution with a % of bleach?Yeah, the pH is up there. It is caustic for jimminy christmas sake.. :nono:I love the stuff though. Cleans everything.Just be careful around the solid or concentrate, it will burn a hole in your skin pretty quickly a la Fight Club.....Freaking drug war is effing everything up.MolBasser
#14
Posted 18 May 2010 - 04:55 PM
In some cases, yes it is clorinated, but in most no. I don't think we use bleach for the chlorination, but I would have to check.MolBassera ph of <2 or >12 is where you start to see major skin damage so this is not to be taken lightly. Does SNBC boost their caustic solution with a % of bleach?
#15
Posted 18 May 2010 - 05:05 PM
#16
Posted 20 May 2010 - 11:12 AM
#17
Posted 21 May 2010 - 07:02 AM
Thanks for this post, I hadn't thought about the effect co2 and head space would have on the ph ... Pretty coolJust to be pedantic, caustic (sodium or potsssium hydroxide solutions will store for a looong time if they are protected from the CO2 in the air. CO2 is an acidic gas, and combines with the -OH in the caustic solution to form our old friend HCO3- (bicarbonate), and this reacts with another -OH to form water and CO3-- (carbonate - can't do super- or subscripts here, so hope this is understandable). So each molecule of CO2 that gets into the hydroxide solution eliminates two hydroxide ions, and the pH goes down because carbonate is a weaker base than hydroxide. The pH drop will be more noticible in the relatively dilute solutions used for brewery cleaning than in the storage solutions. Keep them in closed containers, and once the CO2 in the headspace is gone, the pH stabilizes. Keep them in containers open to the air, and watch the pH drop.And as others have said, concentrated hydroxide ("caustic") solutions are very bad news if you get them on your skin or in your eyes. It's very, well, caustic, and hard to rinse off. Always wear eye and skin protection when you use it.
#18
Posted 23 May 2010 - 05:40 AM
Basser has semen on the brain.Trust me, I chuckle every time I say that word. But, it is real.ETA: I did spell it wrong (big surprise) it is millisiemens.MolBasser
This is the most important thing. It would suck to mess up our eyes because you were too lazy to use a standard alkaline cleaner.Make sure you watch your eyes. This stuff is not the thing to play macho-man with the goggles.
#19
Posted 24 May 2010 - 06:44 PM
More than one very expensive fermentor has been collapsed like God squishing a soda can when caustic was introduced to a CO2 filled fermentor.It pulls a serious vacuum.MolBasserThanks for this post, I hadn't thought about the effect co2 and head space would have on the ph ... Pretty cool
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