ASTM Class A Schellbach Burette with PTFE Stopcock, 10mL, Blue Graduations, Borosilicate 3.3 Glass

This 10mL Schellbach burette is manufactured from heavy-duty borosilicate 3.3 glass. The Schellbach design includes a vertical white stripe with a central blue ribbon behind the graduations for high-contrast meniscus reading. A PTFE stopcock supports precise drop-wise dispensing and resists chemical attack. ASTM Class A accuracy with a tolerance of ±0.03mL per DIN ISO 385, with 0.05mL subdivisions and calibrated to deliver. The body has an 11.7mm outer diameter and 6.6mm inner diameter; the bore is 4.1mm. The full burette measures 17.5" in length. Autoclavable with excellent chemical durability; heat tolerance: strain point 515°C, annealing point 565°C, softening point 820°C.