White Labs WLP004 Irish Ale yeast vs White Labs WLP009 Australian Ale yeast: specs compared
Updated 05 September 2026.
4
specs differ
White Labs WLP004 Irish Ale yeast and White Labs WLP009 Australian Ale yeast differ on 4 specs: fermentation temperature, apparent attenuation, alcohol tolerance, flocculation.
| Spec | White Labs WLP004 Irish Ale yeast | White Labs WLP009 Australian Ale yeast |
|---|---|---|
| Manufacturer | White Labs (liquid) | White Labs (liquid) |
| Species | Saccharomyces cerevisiae, top-fermenting ale | Saccharomyces cerevisiae, top-fermenting ale |
| Fermentation temperature | 18 to 20 C (65 to 68 F) | 18 to 21 C (65 to 70 F) |
| Apparent attenuation | 69 to 74 % (71.5% typical) | 70 to 75 % |
| Alcohol tolerance | Medium to high tolerance | Medium |
| Flocculation | Medium to high | High |
Questions and answers
How do White Labs WLP004 Irish Ale yeast and White Labs WLP009 Australian Ale yeast compare?
White Labs WLP004 Irish Ale yeast and White Labs WLP009 Australian Ale yeast differ on 4 specs: fermentation temperature, apparent attenuation, alcohol tolerance, flocculation.