Ideal for growing and mixing of cell cultures, these Delong style shaker flasks have long necks to reduce splashing that could reach the closure Baffles, spaced at 120°, allow for increased oxygen transfer to the culture medium when used in conjunction with a shaker Designed for polypropylene and stainless steel closures Polypropylene caps have ribbed interior for improved sealing Autoclavable Environmentally sustainable when compared to plastic Type 1, Class A Borosilicate glass construction