Burettes, Straight Bore, Glass Key - Class B

A burette is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. It is a long, graduated glass tube, with a stopcock at its lower. The flow of liquid from the tube to the burette tip is controlled by the stopcock valve.

A Class 'B' Burette with a Straight Bore and Glass Key is the standard workhorse for general laboratory titrations and educational environments. Unlike the Rotaflow models, these use a traditional ground-glass stopcock.

• Accuracy: Conforms to ISO 385 Class B standards. The tolerance for a 50mL unit is typically ±0.10 mL, which is double the margin of error of a Class A burette (±0.05 mL).
• Stopcock (Glass Key): Features a precision-ground glass plug.
  • Note: These require stopcock grease (silicone or petroleum-based) to prevent leaking and to keep the glass from "freezing" or seizing up.
• Graduations: Typically feature permanent blue or white enamel markings for easy reading.
• Material: Made from Borosilicate 3.3 glass, providing excellent resistance to chemical corrosion (especially acidic solutions).

 Specifications

• Compliance: Conforms to ISO 385 Class B standards.
• Accuracy: Class 'B'
• Material: High-grade Borosilicate 3.3 Glass, providing superior resistance to chemical corrosion and thermal shock.
• Graduations: Durable Blue (amber on request) enamel graduations.
• Stopcock Type: Straight Bore with a Glass Key.
• Brand: OMSONS
• Product of India