Schellbach Burette, 25mL - Class A, Includes Calibration Certificate - Glass Stopcock - Blue Graduations - Borosilicate Glass

• 25mL capacity Schellbach Burette has a vertical white backing with a central blue line opposite the graduations, providing better contrast with the miniscus
• Made of high quality, heavy duty, borosilicate 3.3 glass. Autclavable, with excellent durability and chemical resistance
• Includes calibration certificate from ISO-accredited testing lab certifying Class A, ±0.05mL tolerance as per DIN ISO 385 standards
• Chemically-resistant 0.1mL blue graduations and markings provide contrast against clear liquids
• Includes an attached glass key stopcock

This 25mL capacity Schellbach Burette is made of high-quality, heavy-duty borosilicate 3.3 glass - built to last. A white backing with a central blue line runs the outside length of the tube opposite the graduations, so the meniscus is clearly visualized. Features a straight bore glass key stopcock for controlling the flow of liquids, and blue markings which provide excellent contrast against clear liquids. Calibrated to deliver, accurate to Class A, DIN ISO 385 standards with 0.1mL graduations and ±0.05mL tolerance. Includes calibration certificate from an ISO-accredited laboratory. Burette measures 23.75" long with a 13mm (0.5") outer diameter.

Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point 515°C | Annealing Point 565°C | Softening Point 820°C.