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 - In Stock
Pennsylvania - In Stock
Weight 0.25 LBS
Community Q&A

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Water profile additive.
Izzy Britton on Sep 21, 2021
To get proper pH of mash water
Linz on Sep 14, 2021
Water profile additive.
Izzy Britton on Sep 21, 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
balance water chemistry
Alan L on Sep 16, 2021
mash pH adjustment
Schuyler Campbell on Sep 14, 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