What are the grading standards for Panax notoginseng seeds?
Grade 1 seeds: thousand-grain weight greater than 105 grams, moisture content less than 60%, viability greater than 85%, purity greater than 98%. Grade 2 seeds: thousand-grain weight between 100 and 105 grams, moisture content greater than 60%, viability greater than 80%, purity greater than 97%. Grade 3 seeds: thousand-grain weight between 95 and 100 grams, moisture content greater than 60%, viability greater than 75%, purity greater than 90%. Panax notoginseng seeds are laterally flattened or triangular-ovoid, 5 to 7 mm long, 4 to 6 mm in diameter, yellowish-white
Grade 1 seeds: thousand-grain weight greater than 105 grams, moisture content less than 60%, viability greater than 85%, purity greater than 98%.
Grade 2 seeds: thousand-grain weight between 100 and 105 grams, moisture content greater than 60%, viability greater than 80%, purity greater than 97%.
Grade 3 seeds: thousand-grain weight between 95 and 100 grams, moisture content greater than 60%, viability greater than 75%, purity greater than 90%.
Panax notoginseng seeds are laterally flattened or triangular-ovoid, 5 to 7 mm long, 4 to 6 mm in diameter, yellowish-white, with a rough surface. The flat side of the seed has a seed back, and near the base there is a round water-absorbing pore.