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Brewing Products

Premium Brewing Products for Professional Craft Brewers

The Brewing Science Institute (BSI) is your go‑to source for lab‑grade brewing essentials crafted to elevate fermentation, yeast performance, and microbial analysis. Whether you’re managing a 10 bbl brewery or scaling to 1,000 bbl systems, our curated line of nutrients, media, and testing kits delivers professional‑level quality and consistency. Browse all of our brewing products below to get everything you need for your next batch in one, convenient place:

AMV – Alkaline Methylene Violet (100 mL Bottle)

Use AMV to accurately and reliably assess your yeast health.

Product Overview:

Alkaline Methylene Violet (AMV) is a reliable stain for performing yeast cell counts and viability measurements using a microscope and hemacytometer. With proper methods and counting techniques you can achieve accurate and precise results, allowing you to make informed decisions about your yeast health and management practices.

Price: $25 + shipping (100 mL bottle)

Key Benefits:

Accurate and Repeatable Viability Measurements
AMV gives you accurate viability measurements that help you make informed decisions about your yeast health and management practices.

Pitch the Right Amount of Yeast
Accurate cell count and viability measurements are critical for calculating how many living cells are contained in your harvested yeast slurry. Knowing this allows you to adjust how much slurry is required to pitch into your next fermentation.

Applications:

  • For performing accurate yeast cell counts and viability measurements.
  • Useful for counting yeast samples from harvested yeast slurry, beer samples, and verifying pitch rates at the beginning of fermentation.

Usage Guidelines:

Check out our step by step guide for AMV cell counting and viability measurement

Storage: Store refrigerated. Shelf life 6 months (refer to best by date printed on bottle).

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ALDC Enzyme (Alpha-Acetolactate Decarboxylase)

ALDC Enzyme (1kg bottle)

ALDC Enzyme (Alpha-Acetolactate Decarboxylase)
Accelerate Diacetyl Reduction and Streamline Beer Production

Product Overview:

ALDC (Alpha-Acetolactate Decarboxylase) is a specialized enzyme used by professional brewers to reduce diacetyl formation during fermentation and conditioning. ALDC prevents diacetyl from forming by converting alpha-acetolactate (the precursor to diacetyl) directly into acetoin, which is flavor inactive in beer. The result? Cleaner tasting beer, faster turnaround times, and greater control over flavor stability.

Price: $235 + shipping (1kg bottle)

Key Benefits:

Minimize Diacetyl Risk
ALDC enzymatically bypasses diacetyl production, helping eliminate buttery or butterscotch off-flavors.

Shorten Tank Residence Times
Reduce or eliminate the need for a traditional diacetyl rest, allowing faster tank turns and improved brewhouse efficiency.

Improve Flavor Consistency
Ensure reliable diacetyl control across batches, especially in lagers and other clean-fermenting styles.

Supports Yeast Performance in High Gravity Beers
Since ALDC reduces the burden on yeast for diacetyl reduction, it can be particularly valuable in high-gravity fermentations or with reused yeast that may struggle to reabsorb diacetyl post-fermentation.

Applications:

  • Ideal for lagers, cream ales, dry-hopped beers, and other styles sensitive to diacetyl
  • Useful in high-gravity brewing, where yeast stress increases diacetyl formation
  • Recommended in rapid fermentation schedules where shorter tank residence times are needed

Usage Guidelines:

Dosage: 1.2 – 5.9 g/bbl  (1–5 g/hL) Depending on wort composition, yeast strain, and fermentation temperature

Add Timing: Dose directly into cooled wort before or during yeast pitch. It can also be added post-fermentation prior to dry-hopping.

Activity Range: Most effective between 50-100°F (10-40°C)

pH Range: 4.0 – 7.0

Storage: Refrigerate at 32-50°F (0-10°C). Do not freeze. Keep out of direct sunlight.

SDS Information

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Haze Out™ Enzyme for Gluten Reduction

Haze Out Enzyme (1kg bottle)

Beer Clarity and Gluten Reduction in One Powerful Solution

Product Overview:

Haze Out™ is a multi-functional proline-specific oligopeptidase enzyme designed for professional brewers seeking to improve colloidal stability and reduce gluten content—without compromising flavor or fermentation performance. By targeting haze-forming proteins and gluten peptides, Haze Out™ helps produce brilliantly clear beer with broader appeal for gluten-sensitive consumers.

Price: $180 + shipping (1kg bottle)

Key Benefits:

Reduces Chill and Colloidal Haze
Breaks down haze-active proteins and polyphenol-protein complexes that cause persistent turbidity and chill haze.

Lowers Gluten Levels
Effectively hydrolyzes gluten peptides—especially proline-rich sequences—often achieving levels below 10ppm, generally recognized as the gluten-free threshold.*

Preserves Flavor and Foam
Specifically engineered to target haze- and gluten-forming proteins while retaining head retention and beer character.

Broad Beer Style Compatibility
Suitable for lagers, ales, IPAs, and wheat beers—especially when beer clarity or gluten reduction is the end goal.

Applications:

  • For breweries producing bright beers without filtration or finings
  • For gluten-reduced  beer production using traditional barley or wheat malts

Usage Guidelines:

Dosage: 1.2-5.9 g/bbl (1-5 g/hl). Dosage will depend on protein content and gluten reduction target. Use higher amounts for worts consisting of a high proportions of glutenous malts (rye, wheat, etc.) where gluten reduction is the goal.

Add Timing: Dose into cooled wort during knockout.

Activity Range: 50-100°F (10-40°C)

pH Range: 4.0 – 5.0

Storage: Refrigerate between 32-50°F (0-10°C). Do not freeze. Keep out of direct sunlight.

*** PLEASE NOTE: Gluten levels can vary depending on recipe, process, and dosage. Confirm final gluten content with laboratory analysis to meet labeling requirements.

SDS Information

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BSI Yeast Nutrient Logo

Yeast Nutrient (5 lbs)

BSI Yeast Nutrient is a specially formulated blend of essential vitamins and minerals, organic and inorganic nitrogen, yeast hulls, and zinc. It is designed to improve beer fermentation performance and speed, and is particularly beneficial for high gravity and adjunct beers where yeast may lack some necessary nutrients.

This proprietary blend contains an inorganic nitrogen source, as well as yeast hulls to provide organic nitrogen, lipids, and sterols. These ingredients help to maintain the integrity and vitality of yeast cells during fermentation. The added zinc is an essential trace element for yeast that helps with proper enzymatic function during alcohol production, and can also promote better flocculation post-fermentation.

Yeast health is crucial to reducing off-flavors and improving the overall quality of your final beer. By adding yeast nutrient to your fermenting wort, you will be providing your yeast with all of the key minerals and nutrients needed for a successful fermentation, resulting in a higher alcohol yield, improved performance, and better flocculation.

Price: $50 + shipping (5 lb bag)

SDS information

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LMDA Plates (30pk)

The best bacteria and wild yeast test around. This agar test may be used aerobically or anaerobically to determine whether brewing bacteria or wild yeast are present and allows for quick and easy genus identification. It supports the growth of the most common types of brewing bacteria and wild yeast but suppresses the growth of most brewing yeast. If individual colonies arise, note the color, texture and size of each type.

Also, note whether any colonies have changed the color or cloudiness of the media immediately surrounding them. After running a gram-stain, compare your observations against the characteristics listed for each genus, and identification is complete. Keep sealed & refrigerated; 30-day shelf life.

***These plates contain 7ppm cycloheximide, a hazardous chemical. Dispose in accordance with SDS & Local/State regulation. Click here for SDS.

Price: $50 + shipping (30 sterile pre-poured plates)

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Wort Agar Plates (30pk)

30 Sterile Pre-Poured Plates

This aerobic nutrient agar is designed for the growth, storage and conditioning of yeast cultures. Because it is made from wort, it presents yeast with a nutrient profile similar to what the yeast will encounter when pitched, and so may be said to “condition” the yeast in a way that YPD and other nutrient agars cannot. Yields are comparable to commercial nutrient agars. Keep refrigerated; shelf life of up to 30 days.

Price: $50+ shipping (30 sterile pre-poured plates)

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Wort Concentrate (4pk)

Our Wort Concentrate 4 pack contains four individual bottles of sterilized wort that contain all of the key nutrients your harvested yeast slurry will need during storage. Feeding your harvested yeast is critical to maintaining viability and reducing lag time in your next brew! Each 500ml bottle is sufficient to feed a slurry harvested from a 10bbl batch of beer for up to one week. Additional bottles can be used for slurry harvested from bigger tanks or if storage beyond one week is required. For best results, add the wort concentrate to your sanitized yeast storage vessel prior to harvesting to ensure proper mixing.

Shelf life up to 6 months from delivery date. Store in a cool dry place.

$50 + shipping     (4 bottles, 500ml each)

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Clean & Feed Kit (2pk)

Tired of sending your harvested yeast down the drain due to poor viability or contamination? The BSI Clean & Feed Kit is designed to solve both of these problems at once!

Each Clean & Feed Kit contains a two-part activated chlorine dioxide wash and a 500ml bottle of wort concentrate. Mix the activated chlorine dioxide into your slurry to kill any pesky bacteria that may be present. Then feed the slurry with a bottle of wort concentrate to provide all of the nutrients your yeast will need to maintain viability during storage. It’s that  easy! Your yeast will be clean, healthy, and ready to take on your next fermentation. Each kit is sufficient to treat and feed a slurry harvested from a 10bbl batch of beer.

Shelf life up to 6 months from delivery date. Store in a cool dry place.

Kit contains Dioxy-chlor. Click here for SDS.

$50 + shipping     (Contains 2 complete clean and feed kits)

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Our brewing products are specifically created with professional brewers in mind, offering convenient solutions to everyday problems encountered in the brewery. Here are just a few examples of where these products can come into play during your beer brewing process:

  • Boost fermentation health & flavor consistency
     Our yeast nutrients combine vitamins, zinc, organic and inorganic nitrogen, and yeast hulls—designed to support high‑gravity or adjunct fermentations and reduce off‑flavors.
  • Laboratory‑grade agar plates for contamination control and yeast culturing
     Detect unwanted bacteria or wild yeast quickly with LMDA plates, or condition and propagate yeasts using wort‑based agar—ideal for pilot batches, lab propagation, and in‑house QA/QC.
  • Yeast slurry care & storage made simple
     Keep your harvested yeast strong between batches using our Wort Concentrate and Clean & Feed Kits—minimizing viability loss and shortening lag time.

Explore each product’s specs, safety data sheets, pricing, and best‑practice usage guides. If you have questions or want help selecting the right tools for your brewery, our expert team is just a call (719‑482‑4895) or email away. Cheers to healthier fermentations and better beer!