Understanding Shelf Life of Bioaugmentation Products

At EnviroZyme, we are committed to delivering high-performance microbial solutions with consistent, reliable results. A key part of achieving this is understanding the shelf-life and storage requirements for the different types of microbial products we offer. This guide outlines the important shelf-life considerations based on product formulation and microbial type, helping you get the most value from your purchase.

Spore-Forming Bacillus vs. Vegetative Strains

Spore-forming Bacillus strains are highly resilient microorganisms that can survive in harsh conditions by forming protective spores. These spores are dormant and highly resistant to temperature and moisture fluctuations, which significantly extends product shelf-life. Once introduced into the appropriate environment, the spores germinate into active, vegetative bacteria that begin working immediately.

Vegetative strains, by contrast, are active, metabolically live cells at the time of packaging. While we carefully select and produce these strains to maximize stability and shelf-life, they remain more sensitive to environmental conditions and therefore have shorter shelf-lives compared to spore-based products.

Shelf Life by Product Type

Liquid Products Contain Bacterial Spores

• Common Uses: Jan/San cleaning, grease traps, lift stations
• Shelf Life: 1 year
• Formulation Benefit: Contains a preservative system that prevents contamination without harming spore viability.
• Use Case: Ideal for applications requiring ease of dosing and liquid handling without compromising stability.

Dry Products

• Common Uses: wastewater, septic
• Composition: Bacillus spores (with or without vegetative strains)
• Shelf Life: 1 to 3 years, depending on the formulation and packaging
• Storage Notes: Dry products are the most stable when stored properly. Always keep them indoors in a temperature-controlled environment.

Concentrated Nitrifying Bacteria – BioRemove™ AM

• Common Uses: wastewater
• Shelf Life: 6 months
• Storage Requirement: Must be stored cold (4°C or 39.2°F) at all times throughout the supply chain, including during shipment and at customer sites.
• Why: Nitrifying bacteria are particularly sensitive when highly concentrated, making them less stable over time.

Solid Products (e.g., Tablets, Blocks)

• Common Uses: wastewater, lift stations, grease traps
• Shelf Life: 1 to 2 years depending on formulation; however, when protected from moisture and humidity, solids often maintain their effectiveness well beyond 2 years
• Storage Notes: Store in dry, indoor conditions. Exposure to moisture may reduce effectiveness or cause premature activation.

Best Practices for Storage and Handling

• Keep products in their original packaging until use
• Store indoors in a dry, temperature-controlled space
• Avoid freezing or prolonged exposure to high heat
• Ensure proper rotation of inventory based on expiration dates

Proper storage and usage of our bioaugmentation products ensures you maintain the microbial viability needed for optimal system performance. If you have any questions about product handling, storage conditions, or shelf-life, our team is here to help.