Star San Acid Sanitizer

Makes up to 48 Gallons per 4 oz

About This Product

4 oz Size Makes up to 48 Gallons of Ready to use Sanitizer

approx 6 teaspoons / ounce ;  24 teaspoons in 4 oz size


You use only 1/2 teaspoon to make 1 Gallon of ready to use Star San Sanitizer.

Star San Acid Sanitizer is a  cold water surface sanitizer for your cheesemaking or other fermenting equipment. Use only 1/2 tsp.(2.4ml) in 1 gal.(3.75L) cold water and with only a 30 second contact time. It is odor free & tasteless. It is designed to use without rinsing. It may foam, and it is not necessary to rinse off the foam as this is counter productive. Detailed informational sheets included and also listed below. Click on Informational 2 for complete usage rate.

Available in prepackaged bottles from Five Star Chemicals: 4 oz.(118ml), 8 oz.(236ml), 16 oz.(472ml), 32 oz.(994ml) bottles. Click on any of the below links to learn more about this product.

NOTE: Star San is NOT an affect sanitizer for COVID-19. Please refer to the EPA's website for a complete list of products that meet EPA's criteria for use against COVID-19.

EPA REG. No. 65001-1  EPA EST. No. 65001-CO-001

Informational 1

Informational 2

Informational 3

Shipping included within the USA.

What Our Customers Say

  • 5
    Works great, no smell or aftertaste even without rinsing.

    Posted by on 3rd Jan 2020

    I purchase all of my home cheese-making supplies from and have never once had a single complaint. Prompt shipping, accurate product descriptions and good value.

  • 5
    Wine maker

    Posted by Donny lockaby on 10th Sep 2017

    Awsome I use it to sanitize my tools for wine making

  • 5
    fast, easy sanitizer

    Posted by Unknown on 5th Nov 2015

    No smell and fast drying. I clean the whole kitchen before making cheese and then wipe down the main surfaces right before making cheese. I also keep an open bottle of this mixture during cheese making so I can quickly sanitize hands/tools after washing in tap water. Makes me more confident that I have a clean environment to prepare my cheeses, especially the ones that will be aged! Note: no need to re-rinse after using this product. It is designed to use without rinsing or drying and will leave no odor, flavor in your cheese or on anything you sanitize with it. -Steve/

  • 5
    A Great Product

    Posted by Unknown on 24th Apr 2014

    I have used several bottles of this sanitizer as well as several others. This is the most convenient and it does a great job. It is nice that it works in cool water, however I usually use it in hot water.