This set of six Kimax Kimble Kontes 100mL Class A Volumetric Flasks with #13 stoppers is perfect for all your laboratory needs. Made of durable borosilicate glass, these flasks have a wide mouth for easy filling and pouring. They are ideal for use in physical, dental, medical, microbiological, biological, and other laboratory settings. These used laboratory surplus chemistry glassware flasks are in excellent condition and ready for use. They are amber colored to protect light-sensitive contents. The heavy-duty construction ensures that they will last for a long time. Purchase this set of flasks today and take your laboratory work to the next level!