muriatic acid

Muriatic Acid

31.45% hydrochloric acid to control pH and alkalinity levels in swimming pools and hot tubs.

Safety Data Sheet:
Muriatic Acid SDS

Available Sizes:
4 Gal Deposit Case – #15041
2 Gal Disposable Case – #15821
4 Gal Disposable Case – #15841
5 Gal Drum – #15005
15 Gal Drum – #15015
53 Gal Drum – #15054

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Muriatic Acid Product Pages

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HASA Muriatic Acid is a strong inorganic acid, also known as hydrochloric acid. It has a wide variety of industrial uses but around swimming pools and hot tubs, it is most commonly used to lower pH and alkalinity.

Reducing pH:

  1. Using a test kit or test strips, test the pH of the pool water. If high, the amount of Muriatic Acid required for the adjustment can be determined by using a test kit with an acid demand test or through any number of online calculators*.
  2. Once the dosage is known, partially fill a clean bucket with enough tap water so that the acid is diluted at least 10:1.
  3. Carefully add the prescribed amount of Muriatic Acid to the water.
  4. With the circulation system on, pour the diluted acid solution around the perimeter of the pool, avoiding steps, beaches, swim outs and other shallow areas.
  5. Continue circulating the pool until chemicals are fully dispersed.

Reducing Alkalinity:

  1. Using a test kit or test strips, test the alkalinity. If high, the amount of Muriatic Acid required to lower the alkalinity can be estimated using 1.25 pints of 31.45% muriatic acid in 10,000 gallons to lower the alkalinity by 10ppm. Other water factors will affect the actual amount of alkalinity removed by the above dosage.
  2. Turn off the circulation, allow time for the water to become as still as possible.
  3. Slowly pour the full strength Muriatic Acid in a localized spot. Acid is heavier than water and will sink towards the bottom and form a cloud. It is advisable that the spot be located in the deep end of the pool. Care should be taken in the amount of acid used with each treatment so that the concentrated acid solution does not lay on the bottom of the pool for an extended period of time. Depth, water movement and treatment time all are factors to determine the actual dose, but 1 to 2 pints per day is generally regarded as the maximum.
  4. Let stand for an hour, then turn circulation back on.
  5. Test water to determine progress. Depending on the amount of alkalinity to be reduced, process may have to be repeated for several days or even weeks. If pH drops below 7.0, increase using soda ash (sodium carbonate).
  6. Once alkalinity goals are reached, re-balance water.

* Acid demand test kits and online calculators are generally calibrated with the assumption that the pH adjustment will be made with 31.45% hydrochloric acid. If acid is not HASA, check product strength. If not 31.45% consult manufacturer for equivalent dosage.

Talk to Your HASA Industrial Representative to Learn More

Alma Bunch

Director, Human Resources

Alma Bunch serves as Director of Human Resources for HASA, Inc. She has 25 years of collective experience in the human resources and finance fields. Ms. Bunch joined the HASA team in 2018 as Corporate Human Resources Manager and was appointed Director of Human Resources in February 2020.

Vinny Sharma

Vice President, Operations

Vinny Sharma joined HASA, Inc. in 2018 as a General Manager. He currently serves as Vice President of Operations, based in Saugus, CA. Mr. Sharma has held previous positions in the industry with other major brands such as Univar, ICL and Pepperidge Farms. Specializing in plant operations and supply chain optimization, he holds a bachelor’s degree in Chemistry and Production Engineering, and a Master’s degree in Engineering and Industrial Management from Northeastern University.

Rick Sawin

Vice President of Pool, Distribution and Sales

Rick Sawin is Vice President of Sales, Pool and Distribution at HASA, Inc. A veteran within the swimming pool product supply and water treatment industry, prior to joining HASA, he held multiple senior management positions at Leslie’s Poolmart, Inc., a leading retailer within the segment. With that organization, Mr. Sawin served consecutively as National Commercial Sales Manager, Director of Commercial Sales, Director of National Sales, Vice President of Commercial, and finally as Director of Mergers & Acquisitions. He was educated at the University of Nevada-Las Vegas.

Angela Tran

Senior Vice President, Operations

Angela Tran serves as Senior Vice President, Operations of HASA, Inc., having joined the company in 2017. Prior to joining HASA, she served as Controller of Klune Industries, a subsidiary of Precision Castparts / Berkshire Hathaway, and began her career at Howmet Aerospace. She was educated at California State University, Fullerton, and Sam Houston State University. She is also a Certified Public Accountant.

Rob Bzdil

Executive Vice President

Rob Bzdil serves as Executive Vice President for HASA, Inc., overseeing the company’s Industrial business and Supply Chain efforts. Prior to joining HASA, Mr. Bzdil held key positions in Business and New Product Development, Project and Process Engineering, Operations, Supply Chain and Finance. As a Chemical Engineer from Penn State University, he worked with Corning Glass, OxyChem and Pioneer Chlor-Alkali where he established his background in commodity and specialty chemicals.

Ken Ward

Cheif Financial Officer

Ken Ward serves as Chief Financial Officer (CFO) of HASA, Inc., having joined the company in 2017. Prior to his current role, he was Group Controller at Aerospace Dynamics International and CFO at Klune Industries, both subsidiaries of Precision Castparts & Berkshire Hathaway. Mr. Ward also has held senior positions with Technicolor and PricewaterhouseCoopers. He was educated at the University of California Los Angeles.

Chris Brink

President and CEO

Chris Brink is CEO of HASA, Inc., overseeing all strategy, management and product development for the brand. He joined the company in 2018, first serving as HASA’s Chief Operating Officer (COO). Prior to that, Mr. Brink served as Vice President of the Polyurethane Systems Division at Accella Performance Materials, a subsidiary of Carlisle Construction Materials. He also spent seven years at Henry Company, a building materials manufacturer, serving in a variety of operational roles and most recently as a Senior Vice President.