SIY 33 (Fermaid 2133)

12.5 kg

SIY 33™ (Fermaid 2133) is pure autolyzed, spray dried yeast. It provides alpha amino nitrogen, B vitamins and the benefits of yeast hulls to help sluggish or stuck fer­mentations. SIY 33 (Fermaid 2133) will help supplement the alpha amino nitrogen component of YAN. Add at 1/3 sugar depletion when inorganic nitrogen is NOT desired.

Unlike Fermaid K, SIY 33 (Fermaid 2133) does not contain added ammonia salts (DAP) or micronutrients.

Recommended Dosage

25 g/hL
2 lb/1000 gal


SIY 33 (Fermaid 2133) should be mixed with room temperature water before adding to an active fermentation to avoid CO2 release and overflowing of tanks or barrels. The amount of water used is not criti­cal. Simply add enough to make a slurry.


Dated expiration. Store at 18°C(65°F). Once opened, keep tightly sealed and dry.

Technical Documents

SIY 33 (Fermaid 2133)
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