Moisture (%) 5.5 maxFermentation ability (ml/hr) 450 minLiving rate (%) 75 minPreserving Rate (%) 80 minLead as Pb (mg/kg) 1.0 maxArsenic as As (mg/kg) 1.5 maxImpurity NoneE. Coli (ufc/g) 10 max 1. Rapid Fermenting, pure natural and high nutrition make the bread soft and good taste. don't contain any preservative.2. Used for fermenting all kinds of pasta, such as bread, pastry, biscuit, cakes, etc.