Membership questions? Log in issues? Email info@brewersassociation.org

Author Topic: What is pH storage solution?  (Read 742 times)

Offline brewthru

  • Brewer
  • ****
  • Posts: 405
What is pH storage solution?
« on: August 05, 2022, 01:10:50 pm »
What is pH storage solution? The solution used to prevent the probe from drying out between uses.

I ask as there appears a white crust where the storage solution dried on the probe outside the storage cap.

Is the white crust a salt or chemical?

What do others use for pH probe storage? (Read best value).

Thanks.

Offline denny

  • Administrator
  • Retired with too much time on my hands
  • *****
  • Posts: 27093
  • Noti OR [1991.4, 287.6deg] AR
    • Dennybrew
Re: What is pH storage solution?
« Reply #1 on: August 05, 2022, 01:33:41 pm »
I use storage solution and I get those crystals, too. I just rinse them off and move forward.
Life begins at 60.....1.060, that is!

www.dennybrew.com

The best, sharpest, funniest, weirdest and most knowledgable minds in home brewing contribute on the AHA forum. - Alewyfe

"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts." - Bertrand Russell

Offline mainebrewer

  • Brewmaster
  • *****
  • Posts: 594
Re: What is pH storage solution?
« Reply #2 on: August 05, 2022, 01:43:33 pm »
The pH probe storage solution is primarily potassium chloride.
« Last Edit: August 05, 2022, 01:46:32 pm by mainebrewer »
"It's not that people are ignorant, it's just that they know so much that just isn't true." Ronald Reagan

Offline Skeeter686

  • Cellarman
  • **
  • Posts: 93
Re: What is pH storage solution?
« Reply #3 on: August 05, 2022, 03:18:45 pm »
My storage solution also states that it's KCl.  And my probe explicitly called out that a white salt crust may form.  I assume that was to reduce support calls. 

Sent from my SM-T870 using Tapatalk


Offline KellerBrauer

  • Brewmaster
  • *****
  • Posts: 808
  • Bottoms Up!
Re: What is pH storage solution?
« Reply #4 on: August 06, 2022, 06:11:03 am »
I get the white crystals also.  I believe they’re a sign of evaporation of the storage solution itself.  So I made a habit of checking and refilling the storage solution often.
Joliet, IL

All good things come to those who show patients and perseverance while maintaining a positive and progressive attitude. 😉

Offline goose

  • Senior Brewmaster
  • ******
  • Posts: 1287
Re: What is pH storage solution?
« Reply #5 on: August 06, 2022, 07:38:48 am »
Potassium chloride is neither an acid nor a base.  So the pH of an aqueous solution of potassium chloride (KCl) is 7.  and to reinforce the previous comments, the crystals are solid potassium chloride which  come from the evaporation of the storage solution.
Goose Steingass
Wooster, OH
Society of Akron Area Zymurgists (SAAZ)
Wayne County Brew Club
Mansfield Brew Club
BJCP Certified