Made of high-quality rust-proof plated metal, highly durable with a service life of more than 10 years. Holds burettes on both sides (left and right), with plastic rollers that grip the burette firmly without breaking it. Suitable for burettes of many sizes, from 10 ml, 25 ml, 50 ml and 100 ml.
Auto-burette bulb, used to draw or push the solution held in the auto-burette bottle up into the burette barrel; Pushes the solution up in a single squeeze