Automatic Burette Clear PTFE Stopcock is manufactured from pre-vacuum calibrated borosilicate 3.3 glass tubing in full compliance with DIN/ISO Class AS standards, ensuring high accuracy, excellent chemical resistance, and long-term dimensional stability. It is designed for rapid, repeatable, and highly precise volumetric measurements in professional laboratory environments.

The burette is equipped with an intermediate PTFE stopcock, providing exceptionally smooth, precise, and grease-free flow control. The chemically inert nature of PTFE minimizes contamination risks and significantly reduces maintenance requirements, making it ideal for routine and high-throughput titration work.

A clearly visible Schellbach stripe is integrated into the burette body, enabling easy and accurate observation of the meniscus line and reducing reading errors. All inscriptions and nominal volume values are printed with durable blue enamel, ensuring excellent contrast and long-lasting readability.

This automatic burette is supplied without bottle and bellows. Compatible bottles and bellows should be ordered separately to complete the automatic burette system.

Typical Applications

• Automatic and semi-automatic titrations

• Quantitative chemical analysis

• Routine and high-throughput laboratory measurements

• Chemical, pharmaceutical, and research laboratories

Key Advantages

• Borosilicate 3.3 glass for superior chemical and thermal resistance

• Pre-vacuum calibrated for high measurement accuracy

• PTFE stopcock for smooth, grease-free, and contamination-free operation

• Integrated Schellbach stripe for precise meniscus reading

• Clear blue enamel graduations and inscriptions

• Manufactured according to DIN / ISO Class AS standards

Technical Specifications

• Product Type: Automatic Burette

• Material: Borosilicate glass 3.3

• Calibration: Pre-vacuum calibrated

• Stopcock: Intermediate PTFE stopcock (grease-free)

• Reading Aid: Schellbach stripe

• Graduation Color: Blue

• Standards: DIN / ISO Class AS

• Supply Scope: Burette only (bottle and bellows not included)

Safety & Storage Instructions

• Inspect the burette and stopcock for damage before use

• Avoid mechanical shock and excessive force on the stopcock

• Clean thoroughly after each use to maintain accuracy

• Store vertically in a suitable burette stand or protective holder

Usage Notes

• Use only compatible bottles and bellows designed for automatic burettes

• Ensure correct assembly before operation

• Operate the PTFE stopcock gently for precise dispensing

• Always read the meniscus using the Schellbach stripe for best accuracy