Monosodium glutamate 1.Purity: 99%, 2.Sizes: 20,30,40,60 Monosodium ... : The product is packed by the polyethylene bag inner with poly-coated paper bags outside, 25kg/bagTransporting and storing: ... and storing, and not be put and stored together with the smell thing, the best storing temperature is under25 ... keeping ventilation and drying.Shelf life: 24 months. High purity Monosodium glutamate