Brewer's Yeast is used to add essential proteins to drosophila media in order to maximize fly production. This is a highest quality, fine powder spray dried product that we use in our media with excellent results! TYPICAL ANALYSIS Crude Protein -47.1% Crude Fat -2.68% Crude Fiber -0.65% Ash -6.49%
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Always a great purchase. Owner is knowledgeable and very polite. I recommend everyone to purchase with this seller.