Use the PYREX® Glass Erlenmeyer Flask for mixing, tissue dissociation, and some suspension cultures such as CHO cells. This flask has a narrow mouth and a baffled design to promote optimal mixing when used in shakers, while the heavy tooled rim and uniform wall thickness ensure mechanical durability and thermal shock resistance. Made with PYREX® low-expansion borosilicate glass, this flask can withstand repeated autoclave cycles. It includes a convenient marking spot for easy labelling, and is compatible with rubber stopper #6.