Designed for reliable vacuum filtration in science classrooms and labs, this heavy wall Pyrex filter flask is ideal for secondary schools and colleges. Made from durable, chemical-resistant borosilicate glass, it supports safe and effective practical work for students and teachers.

• Made from thermal and chemical resistant Pyrex borosilicate glass

• Heavy wall construction for added strength and durability

• 250ml capacity; height 155mm; base diameter 85mm

• Side-arm feature which consists of a short glass integral side-arm to accept 9mm bore vacuum tubing (B8A89801 - not included).

• Ungraduated with white enamel marking spot

• Pack of 10 flasks