Quantcast

PH

SoapMakingForum

Help Support SoapMakingForum:

Lee242

Well-Known Member
Joined
Aug 12, 2015
Messages
173
Reaction score
32
When the soap is ready to put into mold is the PH the same as it will be after aging or will it change?
 

IrishLass

Staff member
Admin
Joined
Feb 11, 2008
Messages
16,888
Reaction score
10,620
Location
Right here, silly!
No, it's not anywhere near the same at trace as it is after aging. It will definitely change.


IrishLass :)
 

DeeAnna

Well-Known Member
Joined
Feb 20, 2013
Messages
12,603
Reaction score
17,405
Location
Northeast Iowa, USA
Your soap batter should be pH of 13 or 14 -- highly caustic. Finished soap may be anywhere from pH 9 to 11.5 or thereabouts. So a pH of 10.6 for a finished soap is in the realm of normal.
 

Susie

Supporting Member
Joined
Aug 1, 2013
Messages
9,641
Reaction score
9,075
Location
Texas
In order to accurately test pH of solid soap, you need a lab. On the other hand, you can zap test for free. And what you need to know is if there is free lye(hence the zap test), not the pH.
 

DeeAnna

Well-Known Member
Joined
Feb 20, 2013
Messages
12,603
Reaction score
17,405
Location
Northeast Iowa, USA
Strips and phenolpthalien drops are notoriously inaccurate and are truly not worth using. Most people don't use the meters properly, so most pH meter readings aren't accurate either. In addition, Susie is correct that pH doesn't tell you if your soap is skin safe or not. The zap test is a better alternative for that.
 
Last edited:

Lee242

Well-Known Member
Joined
Aug 12, 2015
Messages
173
Reaction score
32
zap test
Some say don't use it some say use it.
But I'll give it a try.
 

Susie

Supporting Member
Joined
Aug 1, 2013
Messages
9,641
Reaction score
9,075
Location
Texas
Try it after a week for most soaps. If you have free lye, you will know it.
 

Dorymae

Well-Known Member
Joined
Jun 17, 2014
Messages
1,544
Reaction score
1,386
Location
Buckeye, Arizona
Lol! You don't have to lick the soap. Just wet a finger rub it on the soap and then touch your tongue with the finger. Zap testing is very accurate and unmistakeable. If you think you may have been zapped - you have not! You will not have to question zap. It does not hurt, but is an uncomfortable sensation, not a taste. If you get a zingy taste it is the EO / FO , not zap.
 

TeresaT

I see you.
Lifetime Supporter
Joined
May 7, 2015
Messages
2,269
Reaction score
2,474
Location
Chatta-Vegas, TN
OK. Somewhere on this forum is a video of soap licking. First she did the finger sudsing thing and if that was a "negative" she actually touched the bar with her tongue. That's where I got the licking soap from. (BTW, I only did it once and was spitting for hours.). :lol:
 

not_ally

Well-Known Member
Joined
Jul 24, 2014
Messages
2,939
Reaction score
1,686
Location
Los Angeles
I am an unabashed soap licker :) I do try only to do it w/the little stubby sampler pieces from trimming the bars, though!
 

galaxyMLP

SPONSOR
Supporting Member
Joined
Mar 18, 2015
Messages
1,838
Reaction score
1,338
Location
Florida
I'm also a soap licker. All my soaps have different tastes you know... lol. The first time I zap tested a salt bar I thought "WOAH, thats salty!" next thought was "oh yeah, duhhhhh, its a salt bar!" :)
 
Top