Since 1986 our 100% pure liquid yeast cultures and fermentations products have been crafted with skill and integrity. Our continuing devotion to providing superior products, insightful technical expertise and helpful customer service has earned Wyeast the reputation as a world wide industry leader. Whatever your fermentation needs, we have the products and the technical expertise to guarantee your success.
Wyeast products are available to home enthusiasts through the finest beer and wine making shops world wide. We also supply our products to commercial fermentation companies around the world.
Direct Pitch Activator™
Activator™ Product Information and Usage
Activator™ packages are designed for direct inoculation of 5 gallons of standard* wort. Activator™ packages contain live yeast cells in a liquid slurry. This yeast slurry is packaged in an optimum condition for storage, while maintaining the ability for rapid and complete fermentation.
Activator™ packages include a sterile liquid nutrient pouch that, when “smacked”, releases its contents into the yeast slurry and “activates” the package. The available nutrients initiate the culture’s metabolism which in turn generates CO2 and causes swelling of the package. This process will reduce lag times by preparing the yeast for a healthy fermentation prior to inoculation. Activation also serves as a viability test of the culture. Expansion of the package is an indicator of healthy (viable and vital) yeast. Although beneficial, cultures do not need to be activated prior to inoculation.