Five Star Star San Brew Sanitizer 16 oz — High-Foaming Acid Anionic, No-Rinse Fast-Acting

Five Star Star San is a concentrated, high-foaming, acid anionic sanitizer designed to rapidly sanitize brewing equipment with a short contact time and no-rinse requirement when used correctly.

Built for homebrewers and professional craft breweries alike, this 16-ounce bottle of Star San delivers a potent sanitizing solution that clings to valves, fittings, and hard-to-reach crevices. The formula was developed to clean a wide variety of brewing surfaces without harming stainless steel or other common equipment materials. It comes in a user-friendly dual-neck bottle with built-in measured pour spouts so you can mix accurate dilutions every time.

How quickly does Star San sanitize my brewing gear?

Star San works fast: at recommended dilutions it requires only about 30 seconds of contact to sanitize effectively. For routine use, equipment can be sprayed, soaked, or rinsed with the solution and allowed to drain and air-dry without a follow-up rinse in most cases.

• Typical contact time: ~30 seconds for standard sanitizing tasks
• Can be used as spray, soak, or dip for valves, fittings, and surfaces
• Leave equipment to air-dry for best results when concentration is correct

Will Star San harm my stainless steel, kegs, or carboys?

The formula is designed to be safe on common brewing materials, including stainless steel and plastics used in fermenters and kettles. When used at appropriate strength and allowed to dry, Star San can even help passivate and protect stainless surfaces rather than corrode them.

• Safe on stainless steel, plastics, and typical brewing surfaces
• Passivates stainless-steel when left to dry at certain concentrations
• Avoid prolonged contact on incompatible materials—follow manufacturer guidance

How do I mix and apply the 16-ounce bottle for homebrew batches?

The dual-neck bottle includes measured fill zones so you can pour exact amounts for common dilutions. Mix the measured concentrate with water in a spray bottle, bucket, or keg washer, then apply by spraying, soaking, or recirculating through lines.

• Use the built-in dosing neck to measure without a separate cup
• Typical dilution: follow label guidance for parts per gallon for a no-rinse solution
• Apply via spray, soak, or recirculation for hard-to-reach components

Why do brewers prefer high-foaming sanitizers like Star San?

The high-foaming action improves contact with textured surfaces and inside fittings, helping the sanitizer reach pits and crevices where microbes hide. Foam clings longer than a quick spray, increasing the chance of complete coverage even with minimal agitation.

• Foam penetrates threads, valves, and small crevices more effectively
• Reduces the need for vigorous scrubbing in tight spots
• Useful for cleaning complex systems like chillers and heat exchangers

Who is this for: Five Star Star San 16 oz is intended for homebrewers, hobby cider and mead makers, and professional craft breweries that need a reliable, fast-acting sanitizer. It suits anyone who wants a concentrated, easy-to-measure product that is effective on kettles, fermentors, carboys, kegs, and fittings without requiring a post-sanitize rinse when used correctly. If you prioritize equipment protection, quick turnaround between batches, and a sanitizer that reaches tight spots, this product fits those needs.