Phosphoric Acid (10%) - 4 oz

WM54

Phosphoric Acid (10%) - 4 oz

WM54

$3.49 & FREE Shipping on orders over $59 OR $8.99 flat rate shipping.

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Item #	WM54
Shipping	Eligible for Free Shipping Program
Availability	West - In Stock East - In Stock
Weight	0.25 LBS

Description

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	West - In Stock East - In Stock
Weight	0.25 LBS

Community Q&A

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Browse 2 questions Browse 2 questions and 6 answers

Why did you choose this?

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Sparge water acidification

Timothy S on Feb 16, 2023

Use to correct Mash PH

Andrew D. R on Nov 16, 2022

Sparge water PH Adjustments made simple

Chris D on Oct 1, 2022

mash pH adjustments

Tom C on Jun 21, 2022

Lower pH

Dwain Pannell on Feb 22, 2022

Lower ph

Phillip e on Dec 17, 2021

Use it to pre acidify my sparge water. Works great!

Chris D on Oct 22, 2021

balance water chemistry

Alan L on Sep 16, 2021

mash pH adjustment

Schuyler C on Sep 14, 2021

HOME BREW FOR LIFE

victor h on Jul 20, 2021

To control PH in mash

Seiji S on Jun 15, 2021

need one

Eric P on Apr 21, 2021

For brewing beer

Cole C on Mar 16, 2021

To control water chemistry

John W on Dec 2, 2020

Ph control of mash

Daniela G on Oct 31, 2020

Because Northern Brewer only had 8%, this is 10%

Bryson G on Oct 28, 2020

for adjusting mash acidity

Michael G on Sep 19, 2020

pH adjustment

Jason M on Aug 11, 2020

Because I ran out

Kuumba S on Jul 25, 2020

pH adjustment on tap water.

Mark W J on Jul 21, 2020

mash

David S on Jun 12, 2020

Price and availability

Doug C on May 16, 2020

finishing up my water additions toolbox

Gary Haygood on Apr 17, 2020

Brulosophy xBmt says phosphoric may be a better choice than lactic

Christian K on Mar 24, 2020

pH control

Oliver I on Jan 16, 2020

Sparge water acidification

Timothy S on Feb 16, 2023

BrunWater spreadsheet element for water adjustment

Frank C on Feb 8, 2023

Use to correct Mash PH

Andrew D. R on Nov 16, 2022

lightest way to lower pH

Gregg P on Oct 15, 2022

Sparge water PH Adjustments made simple

Chris D on Oct 1, 2022

I need to adjust my water.

Merlinus M on Aug 3, 2022

mash pH adjustments

Tom C on Jun 21, 2022

It's the largest offered.

Wayne P on May 19, 2022

Lower pH

Dwain Pannell on Feb 22, 2022

pH adjuster

Lars N on Jan 11, 2022

Lower ph

Phillip e on Dec 17, 2021

water chemistry

Anthony C on Dec 15, 2021

Use it to pre acidify my sparge water. Works great!

Chris D on Oct 22, 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 C on Sep 14, 2021

Adjust water

David S on Aug 4, 2021

HOME BREW FOR LIFE

victor h on Jul 20, 2021

Sparge water acidification

Chris D 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 G 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 B 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

Jake 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 J on Jul 21, 2020

Ph control

sean r on Jun 13, 2020

mash

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 K 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

BrunWater spreadsheet element for water adjustment

Frank C on Feb 8, 2023

lightest way to lower pH

Gregg P on Oct 15, 2022

I need to adjust my water.

Merlinus M on Aug 3, 2022

It's the largest offered.

Wayne P on May 19, 2022

pH adjuster

Lars N on Jan 11, 2022

water chemistry

Anthony C on Dec 15, 2021

Water profile additive.

Izzy Britton on Sep 21, 2021

To get proper pH of mash water

Linz on Sep 14, 2021

Adjust water

David S on Aug 4, 2021

Sparge water acidification

Chris D on Jul 9, 2021

Need for water balance

Michael S on May 21, 2021

ph adjustment

Skip C on Apr 20, 2021

Not available locally

Josh L on Jan 11, 2021

we ran out. need some

Rodney A on Nov 13, 2020

specific recipe

David R on Oct 29, 2020

Mash pH adjustment

Darrell B on Oct 20, 2020

I always use Lactic. Thought I'd try Phosphoric for a bit.

Mike W on Aug 11, 2020

Lowering mash pH

Jake on Aug 7, 2020

To adjust mash pH

Bryan A B on Jul 22, 2020

Ph control

sean r on Jun 13, 2020

acidifying sparge water

Jennifer V on May 26, 2020

water treatment kit

Devin B on May 9, 2020

Water adjustments

Brandon L on Apr 3, 2020

Mash water ph adjustment

Robert J on Jan 28, 2020

Mash ph adjustment

Robert J on Dec 31, 2019

I see no label on the bottle. Dose this come with instructions?

fletcher l 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.

Reply
Inaccurate
Malcolm Lieban (Test - Retail) Staff on Jan 29, 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.

Reply
Inaccurate
Malcolm Lieban (Test - Retail) Staff on Jan 29, 2018

Label on bottle says Phosphoric acid, 10%, 4oz. No instructions with mine (unless I threw them away with the packaging like a dunce).

This is a standard solution, as is Lactic acid at 88%. Lactic-88% is stronger and will drop your mash pH farther. Phosphoric acid is better when you need to slightly tweak pH less - maybe just nudge it a tenth or 2 of a pH. This is more flavor neutral than Lactic-88%. I own both, but have never used either - its something you want to have on hand in case you miss your pH on mash day. There are lots of web resources on how to use this to hit your mash pH - and they can get quite technical really fast. You'll also want a pH meter - or pH strips you trust.

Full disclosure, I hit most of my mash pHs using the Bru'in water spreadsheet and Weyermann acidulated malt (another must-have item). I've only missed once and that was in the other direction - I needed less acid, not more - so I used chalk, not acid. I still recommend having this on hand to anyone mashing often - it's cheap insurance on brewday,

Reply
Inaccurate
Curtis P on Oct 14, 2018
Purchased on Dec 20, 2017

Best solution is to get your water analyzed first (like Ward's water chemistry), then use something like brewersfriend water-chemistry to determine how to modify your brewing water.

Reply
Inaccurate
Jim Riffe on Feb 9, 2018
Purchased on Dec 24, 2017

Gordon Strong per his book "Modern Homebrew Recipes" adds 1/4 tsp of 10% Phosphoric Acid per 5 gal of RO brewing water to adjust the pH.

Reply
Inaccurate
Terri A on Jan 29, 2018
Purchased on Dec 20, 2017

If your doing a 5 gal. batch in r/o water, start with a 1/4 tsp in your water that your going to use for your mash. Then check your ph

Reply
Inaccurate
Eric K on Dec 2, 2018
Purchased on Nov 27, 2018

There are no real instructions since the volume needed depends on chemistry of water being used and beer recipe.

Reply
Inaccurate
Dick R on Jan 29, 2018
Purchased on Dec 20, 2017

Vote for the best answer above!

I ordered this and when it arrived there was no seal under the cap. Is this normal?

Jonathan M on May 27, 2024

Reviews

Review More Purchases | My Posts

4.4 / 5.0

14 Reviews

5 Stars

4 Stars

3 Stars

2 Stars

1 Star

Rated 2 out of 5

Not reliable

I couldn't understand why my larger batch (15G+) mashes had such high pH. I bought some 75% phosphoric acid and started using it, and all my pH problems were resolved.

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July 2, 2024

Tim Cahill

Purchased
over 5 years ago

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Rated 4 out of 5

Good, neutral-flavored acid

My favorite acid to lower pH, because it has no noticeable residual taste.

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August 27, 2022

Merlinus M

Purchased
over 2 years ago

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Rated 5 out of 5

Good for lowering ph if u only what to drop it 1/2 a point if not you will have to use alot

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March 1, 2022

Phillip e

Purchased
over 2 years ago

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Rated 5 out of 5

Great Product

Works great for adusting my strike and sparge water.

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May 6, 2021

Harold H

Purchased
over 4 years ago

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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.

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June 10, 2020

Todd

Purchased
over 4 years ago

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Rated 4 out of 5

Just a little will do.

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July 19, 2018

Purchased
over 6 years ago

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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.