Hexagonal polypropylene collars protect glass cylinders from breakage.

• Made of premium polypropylene plastic with high heat tolerance and chemical resistance
• Hexagonal shape prevents cylinder from rolling when placed on side
• Fits standard glass graduated cylinders
• Microwavable and autoclavable at 121 °C

Also known as 'bumper guards', these blue polypropylene cylinder collars will provide protection against breakage when cylinders are knocked over. Their hexagonal shape prevents the cylinder from rolling off benches when placed on their side. The collars fit over standard graduated cylinders. Resistant to fatigue for long term durability. High heat tolerance with a temperature range of –20 to +135 °C.