Phosphoric Acid (10%) - 4 oz.

Phosphoric Acid (10%) - 4 oz.

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10% concentration. Phosphoric acid is said to be tasteless while lactic in large quantities can potentially leave flavor. Being a lower conentration than the Lactic, it is slower to change the pH of your water and therefore more forgiving to use.

Shipping Restricted: This product is only eligible for ground shipment within the contiguous 48 states.
Item # WM54
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 0.25 LBS
Community Q&A

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Why did you choose this?
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balance water chemistry
Alan L on Sep 16, 2021
mash pH adjustment
Schuyler Campbell on Sep 14, 2021
balance water chemistry
Alan L on Sep 16, 2021
To get proper pH of mash water
Linz on Sep 14, 2021
mash pH adjustment
Schuyler Campbell on Sep 14, 2021
Adjust water
David S on Aug 4, 2021
victor h on Jul 20, 2021
Sparge water acidification
Chris Dornbach on Jul 9, 2021
To control PH in mash
Seiji S on Jun 15, 2021
Need for water balance
Michael S on May 21, 2021
need one
Eric P on Apr 21, 2021
ph adjustment
Skip C on Apr 20, 2021
For brewing beer
Cole C on Mar 16, 2021
Not available locally
Josh L on Jan 11, 2021
To control water chemistry
John W on Dec 2, 2020
we ran out. need some
Rodney A on Nov 13, 2020
Ph control of mash
Daniela Garcia on Oct 31, 2020
specific recipe
David R on Oct 29, 2020
Because Northern Brewer only had 8%, this is 10%
Bryson G on Oct 28, 2020
Mash pH adjustment
Darrell Burk on Oct 20, 2020
for adjusting mash acidity
Michael G on Sep 19, 2020
I always use Lactic. Thought I'd try Phosphoric for a bit.
Mike W on Aug 11, 2020
pH adjustment
Jason M on Aug 11, 2020
Lowering mash pH
Jacob H on Aug 7, 2020
Because I ran out
Kuumba S on Jul 25, 2020
To adjust mash pH
Bryan A B on Jul 22, 2020
pH adjustment on tap water.
Mark W Johnson on Jul 21, 2020
Ph control
sean r on Jun 13, 2020
David S on Jun 12, 2020
acidifying sparge water
Jennifer V on May 26, 2020
Price and availability
Doug C on May 16, 2020
water treatment kit
Devin B on May 9, 2020
finishing up my water additions toolbox
Gary Haygood on Apr 17, 2020
Water adjustments
Brandon L on Apr 3, 2020
Brulosophy xBmt says phosphoric may be a better choice than lactic
Christian Knoebel on Mar 24, 2020
Mash water ph adjustment
Robert J on Jan 28, 2020
pH control
Oliver I on Jan 16, 2020
Mash ph adjustment
Robert J on Dec 31, 2019
Steve H on Dec 23, 2019
Water ph
Sean F on Dec 13, 2019
Brewing water adjustments
Daniel G on Dec 10, 2019
Water treatment
Mainefolks on Dec 1, 2019
Lower brew water pH
Brandon Whitehead on Nov 18, 2019
pH adjustment - just right
Bob Z on Nov 2, 2019
Simplicity of use.
Troy E on Sep 5, 2019
water alkalinity adjustment
joseph j on Jul 25, 2019
To lower sparge water ph
Bonnie P on Jul 25, 2019
Flavorless acid for mash/boil pH adjustment
Tom l on Jul 22, 2019
High TA/High pH wine adjustment
Paul K on May 28, 2019
Small package, I'll be attempting to adjust my water chemistry for the first time.
JAMES MICHAEL HILL J on May 15, 2019
Ph reduction
John F on Apr 11, 2019
Thought I would Try it
James Reneau on Apr 3, 2019
To get proper pH of mash water
Linz on Sep 14, 2021
Adjust water
David S on Aug 4, 2021
I see no label on the bottle. Dose this come with instructions?
fletcher little on Jan 25, 2018
BEST ANSWER: The bottle does come with a printed label that has the product information. The dosage rate will vary based on your application and water profile.

4.6 / 5.0
11 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Great Product
Works great for adusting my strike and sparge water.
May 6, 2021
1 year ago
Rated 5 out of 5
Reduces PH with no flavor impact
I like to use Phosphoric acid to reduce the PH of my strike water. Easy to measure and I don’t have little powder piles in the bottom of the kettle.
June 10, 2020
1 year ago
Rated 4 out of 5
Just a little will do.
July 19, 2018
over 3 years ago
Rated 5 out of 5
lower the ph of your water
I started using this a couple of years ago. It (along with cal chl and a few other additions) makes it easy to hit the ph in the mash. Any mash, not just the dark beers.
March 24, 2018
over 3 years ago
Rated 5 out of 5
Sadly this is the largest size bottle
Seems strange that you can order 100 of them, but not in a single bottle larger than this.
February 9, 2018
over 3 years ago
Rated 4 out of 5
Lower Ph
Works great to lower mash water to 5.2 before sparging
May 29, 2015
Rated 5 out of 5
Easier than Latic acid
Instead of the 88% Latic acid the 10% acid enabled me to dial in my mash ph to within .03, I be happy
May 27, 2015
Rated 5 out of 5
Easy to bring pH down for mashing and sparging
4 ml is enough to bring my spare water of 8 gallons to 5.4 pH.
No influence on the beer flavor and easy to use as it is not full strength.
May 9, 2015
Rated 4 out of 5
Works as expected
Use this for my Milwaukee PH meter.
May 6, 2015
Rated 5 out of 5
Great for pH adjustment
Better than Lactic acid for mash pH adjustment. 10 percent strength is perfect for my small batch brewing
May 5, 2015