Spectrum Essentials Brand Flaxseeds are premium quality organic seeds that have been carefully selected for their nutritive content. Flaxseed is the most concentrated source of SDG lignans—the amount of SDG lignans can vary from 0.7% to 1.9% of seed weight depending on seasonal variation in growing conditions. These select seeds are meticulously cleaned using a three-part process to remove low weight, broken, and dirty seeds commonly found in bulk bins. The sliced seed is immediately packaged in this light protective pouch and sealed airtight to ensure optimum nutritive benefits and product freshness.