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Brewing Water Modifiers

With water comprising up to 95 percent of the volume, water could well be the single most important ingredient in your home brewed beer. Don't take it for granted! If you need water modifiers like brewing salts or gypsum to adjust the salt and mineral content in your beer, or to change the softness or focus of the malt and hops in the beer, visit MoreBeer! for water modifiers that can help boost the efficiency of your system. Gypsum is calcium sulfate that is used to add calcium ions to brewing water to permanently harden it. Epsom salt, used at half the levels of gypsum, adds sulfate and magnesium ions to brewing water. Calcium carbonate can be used for temporary hardness in dark beers by adjusting the pH level upward. Burton salts blend gypsum, potassium chloride and Epsom salt for a mixture known as "brewing salts."

Want to learn More! about modifying your brewing water? Click here, to check out our full article on the subject.

30 products

  • Gypsum (Calcium Sulfate) - PLACEHOLDER

    Gypsum (Calcium Sulfate)

    34 reviews

    Keeping track of your water chemistry pays off with outstanding tasting beer!    If you have soft water and are brewing a hop forward beer, you’ll want some Gypsum on hand. Gypsum (calcium sulfate) is used to add permanent hardness to your brewing water in the form of calcium ions, which will increase the hop perception in your beer.    1 gram of Calcium Sulfate in 1 gallon of water changes the salt levels by 61.5 ppm calcium, 147.5 ppm sulfate and adds 153.5 ppm to the hardness.   

    $1.99 - $59.99

  • Calcium Chloride - PLACEHOLDER Calcium Chloride - PLACEHOLDER

    Calcium Chloride

    34 reviews

    Calcium chloride is usually used in place of Gypsum when sulfates are not desired. Calcium chloride will adjust your mash pH down. 1 gram in 1 gallon changes the salt levels by 72 ppm calcium, 127.5 ppm chloride and adds 180 ppm to the hardness. This is food grade anhydrous Calcium Chloride.

    $2.49 - $17.99

  • Lactic Acid - 4 fl oz

    Lactic Acid (88%) - 4 oz.

    16 reviews

    88% concentration. Use to adjust pH of sparge water down. We use a pipette to measure out lactic acid as it is a liquid.

    $4.99

  • Epsom Salt - PLACEHOLDER

    Epsom Salt (Magnesium Sulfate)

    8 reviews

    Epsom is used to add sulfate and magnesium ions to brewing water. It is often used at half the levels of Gypsum. 1 gram in 1 gallon changes the salt levels by 103 ppm sulfate, 26 ppm Magnesium and adds 108 ppm to the hardness. Promash is a useful utility to calculate water salts. Epsom salt is also ideal as a nutrient source for growing hop plants.

    $1.39 - $149.99

  • Campden Tablets (25) Campden Tablets (25)

    Campden Tablets (Sodium Metabisulphite) - 25 Tablets

    13 reviews

    Sodium metabisulfite campden tablets are an excellent way to remove chloramine from tap water prior for brewing. Simply crush up one campden tablet, drop it in your brewing water prior to adding anything else, and proceed as normal!

    $1.99

  • Calcium Carbonate - PLACEHOLDER

    Chalk (Calcium Carbonate)

    11 reviews

    Calcium carbonate is used to reduce the acidity of wine. It does not require cold-stabilization to force complete precipitation, as does potassium carbonate. However, calcium carbonate is more likely to affect the flavor than potassium carbonate, and may take a few months to fully precipitate. One-quarter ounce (about 4 teaspoons) of calcium carbonate reduces acidity in one gallon by about 0.25%. Foaming may occur because of the production of CO2. Do not use more than one ounce per gallon. Wait 24 hours and rack wine. Calcium carbonate is also used in beer to increase the temporary hardness of water. Traditionally used in English stouts, pale ales and bitters. Usage: Usage varies with acid level Common name: Chalk

    $1.69 - $79.99

  • Phosphoric Acid - 4 fl oz - 10% Solution

    Phosphoric Acid (10%) - 4 oz

    14 reviews

    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.

    $3.49

  • LaMotte - BrewLab Basic Water Test Kit - 7189-02

    LaMotte - BrewLab Basic Water Test Kit 7189-02

    40 reviews

    The BrewLab Basic® water testing kit, model 7189-02, for home brewers quantifies 7 important water test factors. Experts agree water conditions affect your final product, so take the mystery out of making great beer. Looking for a digital pH test? Check out the BrewLab® Plus!   Trust LaMotte, the water analysis experts since 1919, to help you control your most important ingredient - water! Visit HomeBrewFinds.com for a hands-on review of the LaMotte BrewLab water test kit. For more information on water and its role in the brewing process, check out Water, A Comprehensive Guide for Brewers written by John Palmer and MoreBeer!'s own Colin Kaminski. For help with water adjustments, download Palmer's Brewing Water Adjustment App, currently available for iOS devices and coming soon to Android.

    $298.99

  • Burton Salts - PLACEHOLDER

    Burton Salts (Brewing Salts)

    6 reviews

    Also known as brewing salts, it is a mixture of Gypsum, Calcium Carbonate and Epsom Salt. 1 tsp adds 1119 ppm per 1 gallon. For Pale Ales in the Burton on Trent style. Burton salts can come in either crystal or powdered form. We ship what is available at the time your order is placed.   30g per 5 gallons will provide: 266 ppm Ca 63 ppm Mg 159 ppm Carbonate 631 ppm Sulfate

    $1.49 - $14.99

  • Campden Tablets - Potassium Metabisulfite (KMS) - PLACEHOLDER Campden Tablets - Potassium Metabisulfite (KMS) - PLACEHOLDER

    Campden Tablets (Potassium Metabisulfite)

    5 reviews

    In wine, used to kill naturally occurring microorganisms and prevent spoilage. Also works as an antioxidant. Add at a rate of 1 tab/gallon to achieve 75 ppm free SO2.  These tablets use potassium metabisulphate as opposed to sodium metabisulphate.  This is generally preferred by winemakers who do not want to add sodium into their wine.   Can also be added to water to remove chloramine (1 tab is sufficient for roughly 5-20 gallons)

    $1.99 - $79.99

  • LaMotte - BrewLab Plus Water Test Kit with pH Meter - 7188-02

    LaMotte - BrewLab Plus Water Test Kit 7188-02

    31 reviews

    The BrewLab Plus® water test kit, model 7188-02, for home brewers quantifies 8 important water test factors. Includes everything in BrewLab Basic kit plus a high quality digital pH meter for monitoring batches from start to finish. Experts agree water conditions affect your final product, so take the mystery out of making great beer. Trust LaMotte, the water analysis experts since 1919, to help you control your most important ingredient—water! Visit HomeBrewFinds.com for a hands-on review of the LaMotte BrewLab water test kit. For more information on water and its role in the brewing process, check out Water, A Comprehensive Guide for Brewers written by John Palmer and MoreBeer!'s own Colin Kaminski. For help with water adjustments, download Palmer's Brewing Water Adjustment App, currently available for iOS devices and coming soon to Android. See the Documents Tab above for additional information.

    $332.99

  • Stainless Steel Measuring Spoons Stainless Steel Measuring Spoons

    Measuring Spoons

    7 reviews

    Stainless steel measuring spoon set for measuring such brewing items as water mofidiers, irish moss, lactic acid, yeast nutrient, etc. This set includes four spoons from 1/4 tsp (1ml) to 1 tblsp (15ml).

    $3.49

  • LaMotte Water Test Reagent - Hardness Reagent 5 (15 ml)

    Hardness Reagent 5 (15 mL) - LaMotte Water Test Reagent

    Replacement Hardness test reagent 5 (15 ml) with a 12 month shelf life Does not include complete BrewLab test kit.   See BrewLab Basic® test kit or BrewLab Plus test kit for additional information.

    $15.99

  • LaMotte Water Test Reagent - Hardness Reagent #6 Tablets LaMotte Water Test Reagent - Hardness Reagent #6 Tablets

    Hardness Reagent #6 Tablets - Lamotte Water Test Reagent (4484-J)

    1 review

    Replacement Hardness Reagent #6 Tablets (4484-J) for the Lamotte Water Test Kit (7189-01). 

    $19.99

  • LaMotte Water Test Reagent - Calcium Hardness Indicator Tablets LaMotte Water Test Reagent - Calcium Hardness Indicator Tablets

    Calcium Hardness Indicator Tablets - Lamotte Water Test Reagent (T-5250-H)

    Replacement Calcium Hardness Indicator Tablets (T-5250-H) for the Lamotte Water Test Kit (7189-01). 

    $21.99

  • LaMotte Water Test Reagent - Hardness Reagent #7 LaMotte Water Test Reagent - Hardness Reagent #7

    Hardness Reagent #7 - Lamotte Water Test Reagent (4487WT-H)

    Replacement Hardness Reagent #7 (4487WT-H) for the Lamotte Water Test Kit (7189-01). 

    $20.99

  • LaMotte Water Test Reagent - Total Alkalinity Indicator (15 ml)

    Total Alkalinity Indicator (15 mL) - LaMotte Water Test Reagent

    Replacement Total Alkalinity Indicator test reagent (15 ml) with a 6 month shelf life Does not include complete BrewLab test kit.   See BrewLab Basic® test kit or BrewLab Plus test kit for additional information.

    $14.99

  • LaMotte Water Test Reagent - Sodium Hydroxide Reagent with Metal Inhibitors LaMotte Water Test Reagent - Sodium Hydroxide Reagent with Metal Inhibitors

    Sodium Hydroxide Reagent with Metal Inhibitors - Lamotte Water Test Reagent (4259-E)

    Replacement Sodium Hydroxide Reagent with Metal Inhibitors (4259-E) for the Lamotte Water Test Kit (7189-01). 

    $16.99

  • LaMotte Water Test Reagent - Chloride Reagent A LaMotte Water Test Reagent - Chloride Reagent A

    Chloride Reagent A - Lamotte Water Test Reagent (4069-E)

    Replacement Chloride Reagent A (4069-E) for the Lamotte Water Test Kit (7189-01). 

    $15.99

  • Last stock! LaMotte Water Test Reagent - Sulfuric Acid - 0.12N LaMotte Water Test Reagent - Sulfuric Acid - 0.12N

    Sulfuric Acid - 0.12N - Lamotte Water Test Reagent (7748WT-G)

    Replacement Sulfuric Acid - 0.12N (7748WT-G) for the Lamotte Water Test Kit (7189-01). 

    $17.99

  • LaMotte Water Test Reagent - Silver Nitrate - 0.171N LaMotte Water Test Reagent - Silver Nitrate - 0.171N

    Silver Nitrate - 0.171N - Lamotte Water Test Reagent (3824WT-G)

    Replacement Silver Nitrate - 0.171N (3824WT-G) for the Lamotte Water Test Kit (7189-01). 

    $20.99

  • LaMotte Water Test Reagent - Test Tube with Cap LaMotte Water Test Reagent - Test Tube with Cap

    Test Tube with Cap - Lamotte Water Test Reagent

    1 review

    Replacement Test Tube with Cap for the Lamotte Water Test Kit (7189-01). 

    $6.99

  • LaMotte Water Test Reagent - Plastic Test Tube - 5, 10, 25mL with Cap LaMotte Water Test Reagent - Plastic Test Tube - 5, 10, 25mL with Cap

    Plastic Test Tube - 25mL with Cap - Lamotte Water Test Reagent

    Replacement 25 mL Plastic Test Tube with Cap for the Lamotte Water Test Kit (7189-01). 

    $5.49

  • LaMotte Water Test Reagent - Sulfate Turb Tablets LaMotte Water Test Reagent - Sulfate Turb Tablets

    Sulfate Turb Tablets - Lamotte Water Test Reagent (6456-H)

    Replacement Sulfate Turb Tablets (6456-H) for the Lamotte Water Test Kit (7189-01). 

    $82.99

  • Lamotte - BrewLab Pro Water Analysis Kit

    LaMotte - BrewLab Pro Water Analysis Kit 7190

    The BrewLab Pro kit is made to order. The manufacturer's lead time is 40-60 days from when the order is placed. Nail down your water adjustments with the Lamotte BrewLab Pro water analysis kit. Developed with pro brewers in mind, this kit measures 11 of the most important factors in the brewing process. Knowing what's in your water and how to adjust the mineral profile will take your brews to the next level. After all, water is the main ingredient in beer!  Test for 11 Essential Factors Chloride Sulfate Alkalinity Total Hardness Calcium Hardness Magnesium Hardness Sodium pH Temperature Total Dissolved Solids Dissolved Oxygen This kit was developed in cooperation with John Palmer, author of Water, A Comprehensive Guide for Brewers. Check out Palmer's Brewing Water Adjustment App, currently available for iOS devices and coming soon to Android.   Alkalinity: Alkalinity is generally a problem in brewing water. Alkalinity is the carbonate and bicarbonate content of the water, and acts to raise the pH of the mash and beer. Water hardness can offset the alkalinity, and for that reason both parameters are typically measured as “Calcium Carbonate” in order to determine the net effect.   Chloride: The chloride ion acts to bring out the sweetness and fullness of the malt flavor, much like table salt does for food. Craft brewers often add calcium chloride to brewing water for Pilsner and other lagers.   Dissolved Oxygen: Dissolved oxygen can have both a positive and negative impact on beer, depending on the brewing stage. While fermentation itself is an anaerobic process (occurs in the absence of air), yeast cells do require oxygen for growth. Excessive DO can lead to rapid fermentations and excessive yeast growth, resulting in higher ester production, giving fruitier flavors. It can also lead to permanent chill haze, increased beer astringency, and an increase in color intensity, largely due to the oxidation of polyphenols.   Hardness: Water hardness is a brewer’s friend because calcium and magnesium are important ions in many biochemical reactions during mashing and fermentation. Calcium: Helps prevent enzymes from denaturing and extends their activity in the mash, promoting clarity, flavor, and stability in the finished beer. Magnesium: In small amounts Mg is an important yeast nutrient. The better the “yeast ferment”, the cleaner the alcohol produced.   pH: The chemistry of brewing and cooking is complex, and while knowing the mineral content of the water is a critical first step to predicting the impact of the water to the beer, the best way is to measure it, and that is where pH comes into the picture. The mineral content of the water directly affects the pH of the mash, and the pH of the mash affects the entire brewing process—both in process performance and beer flavor. In order to consistently brew great beer, the pH of the mash, wort, and beer should be monitored at every step.   Sodium: Sodium acts in concert with chloride to enhance the sweetness and fullness of the malt, but just as in food and cooking, too much can oversalt the beer and result in salty or metallic flavors. Sodium is ubiquitous in water supplies and mineral additions, so it is important for the brewer to know how much the water has before any treatments are planned. Sodium can be easily determined by calculation from the results of the other tests.   Sulfate: Sulfate and chloride ions in water affect the flavor balance of the beer, from hoppy to malty. The sulfate ion acts to accentuate the hoppiness and dryness of the beer, making it more crisp tasting. Craft brewers often add calcium sulfate to their brewing water for pale ales and IPAs.   Total Dissolved Solids: The measurement of total dissolved solids allows the brewer to quickly determine if there has been a shift or change in a water source or brewing process by measuring all solids in solution. It can also provide a valuable quality assurance check on demineralization processes and waste treatment effectiveness.  

    $900.00

  • Five Star - Lactic Acid 88% - PLACEHOLDER Five Star - Lactic Acid 88% - PLACEHOLDER

    Five Star | Lactic Acid (88%)

    88% concentration. Use to adjust pH of sparge water down.

    $220.99 - $2,707.99

  • Five Star - Phosphoric Acid 75% - PLACEHOLDER

    Five Star | Phosphoric Acid (75%)

    Used to lower mash pH.   Please note: Intended for commercial use. Due to DOT HAZMAT shipping restrictions, orders for multiple 1-gallon or 5-gallon units will require freight shipping. HAZMAT items are not able to be returned.

    $233.99 - $281.99

  • Smart Brew - eXact Smart Brew Starter kit - Water Test Smart Brew - eXact Smart Brew Starter kit - Water Test

    Smart Brew | eXact Smart Brew Starter kit | Water Test Kit

    The Smart Brew® Starter Kit comes prefigured with exactly what's needed to start testing your water for the perfect brew!  Each kit includes the eXact iDip® 525 photometer with the following eXact® Strips:  Total Hardness, Calcium Hardness, Total Alkalinity, pH, Chloride, and Sulfate.  Each kit is packed in a rugged and durable plastic case with secure fasteners and padded compartments. The eXact iDip® app is available to download for Free on Apple App Store and on Google Play app store on Android.  Compatible with iPhone, iPad, and iPod touch with the minimum iOS system version 9.0 and Android version 5.0 with Bluetooth® 4.0.   Details: Standard navy blue plastic carrying case w/ Foam includes eXact iDip® 525 Photometer Cleaning brush Instruction manual 25 tests of each pH-II, High Range Total Hardness, Calcium Hardness, Total Alkalinity, Chloride III, Sulfate Free downloadable app with pre-installed tests: pH, Free Chlorine, Total Chlorine, Total Alkalinity. Additional test parameters will need to be purchased and downloaded in-app at $4.99 each or as a bundle (Smart Brew® Bundle) for $18.99      

    $379.99

  • Smart Brew - eXact Smart Brew Professional Kit - Water Test Smart Brew - eXact Smart Brew Professional Kit - Water Test

    Smart Brew | eXact Smart Brew Professional Kit | Water Test Kit

    The eXact iDip® Professional Test Kit is the latest generation test kit that combines two state of the art water quality test instruments. The first is the revolutionary Level 1 NSF/ANSI-50 Certified eXact iDip® Smart Photometer System® which integrates patented 2–way wireless communication with any compatible iOS or Android smart device and has the potential to test over 40 water parameters. The second is the NEW eXact® pH+ Meter system which capitalizes on electrochemistry technology combined with Bluetooth connectivity.   Preconfigured kit comes with exactly what's needed to start testing (excluding app software). Packed in a rugged and durable plastic case with secure fasteners and padded compartments. Compatible with iPhone, iPad, and iPod touch with the minimum iOS system version 9.0 and Android version 5.0 with Bluetooth® 4.0.     Details: Standard navy blue plastic carrying case w/ Foam includes eXact iDip® 525 Photometer Cleaning brush Instruction manual 25 tests of each High Range Total Hardness, Calcium Hardness, Total Alkalinity, Chloride III, Sulfate eXact® pH+ Meter System pH, TDS, Salinity, Conductivity, and Temperature Free downloadable app with pre-installed tests: pH, Free Chlorine, Total Chlorine, Total Alkalinity. Additional test parameters will need to be purchased and downloaded in-app at $4.99 each or as a bundle (Smart Brew® Bundle) for $18.99    

    $689.99

  • Smart Brew - eXact Smart Brew Refill Box

    Smart Brew | eXact Smart Brew | Water Test Refill Box

    Contains refill bottles of each test for quick ordering.   Box includes 1 bottle each of: Total Alkalinity(100 tests) pH (100 tests) HR Total Hardness (50 tests) Calcium Hardness (50 tests) Chloride (25 tests) Sulfate (50 tests).  

    $89.99

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