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SafLager W-34/70

Dry Lager yeast from Fermentis.

LabFermentis· Lager · Dry · W-34/70

Specs

Attenuation
80–84%
The share of sugars the yeast ferments out. Higher attenuation means a drier, stronger beer.
Optimal temp
9–22°C
48–72°F
The range where this strain ferments cleanly, without throwing off-flavors. Most brewers pitch near the low end.
Flocculation
High
How readily the yeast clumps together and drops clear once fermentation winds down.
Alcohol tolerance
≈11% ABV
The rough ABV ceiling where the yeast stresses out and stops fermenting.

Genetic traits

Phenolics
POF−
Ferments clean
Phenolically clean (POF-negative). No clove or spice, so malt, esters, and hops come through unmasked. The norm for American and British ales and most lagers.
Diastatic
STA-1−
Not diastatic
Does not carry the STA1 (diastaticus) gene. It attenuates normally, with no diastaticus over-attenuation or gushing risk.

Same strain, other labs

Weihenstephan 34/70
W-34/70 = OYL-103 = 2035-PC

Potential substitutes for SafLager W-34/70

Usually used in

Lagers & Märzen

Standard for these styles

Styles where SafLager W-34/70 is a standard pick — from the corpus, not the guidelines.

Common questions

What is the SafLager W-34/70 equivalent?
OYL-103 American Lager and 2035-PC American Lager — the same strain from other labs, the Weihenstephan 34/70 strain.
What is SafLager W-34/70's attenuation?
80–84% apparent attenuation.
What temperature should I ferment SafLager W-34/70 at?
9–22°C is the recommended range.
What beer styles is SafLager W-34/70 good for?
Lagers & Märzen.
What can I substitute for SafLager W-34/70?
2124 Bohemian Lager (similar temperature range), L13 Global (similar temperature range), and OYL-106 German Lager I (similar temperature range).
Brew with SafLager W-34/70
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