Burettes, Automatic, PTFE Stopcock, Class A Amber

With Individual Class 'A' Certi?cate. • Printed in white colour. • Highly resistant to chemical attack.

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Material: Amber Borosilicate Glass 3.3 (for light-sensitive materials).
Accuracy: Class A according to DIN/ISO 385 standards.
Stopcock Type: PTFE (Polytetrafluoroethylene) needle valve or Rotaflow, offering leak-proof, smooth, non-stick, and chemically resistant operation.
Capacity Options: Common sizes include 10 mL, 25 mL, 50 mL, and 100 mL.
Automatic Zeroing: Equipped with a reservoir bottle and rubber bellow for automatic zero filling.
Tolerance: Example, a 50 mL burette typically has a tolerance of
±0.05plus or minus 0.05
±0.05 mL.
Subdivisions: Generally
0.100.10
0.10 mL or
0.050.05
0.05 mL.
Certification: Often supplied with individual NABL or ISO calibration certificates.
Markings: White enamel or amber graduations for clear reading.