DURAN® Automatic Burette, Class AS, Pellet-type, side-positioned standard ground stopcock and glass key, Schellbach stripe


with batch certificate and certificate of conformity
  • Complies with ISO 385
  • Made from borosilicate glass 3.3
  • Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature
  • The volume content tolerances conform to accuracy Class AS
  • Side-positioned standard ground stopcock, with glass key and Schellbach stripe
  • Graduated, main volumes ring marked
  • 30 seconds waiting time

Product Overview

The original DURAN® burettes are made of highly chemically resistant borosilicate glass 3.3. Their precise scaling makes them particularly suitable for titrimetric purposes. The amount of liquid required for titration, but previously unknown, can be read off very accurately after the reaction has been completed. Adjustment is made to drain (“Ex”) for + 20 °C reference temperature. This means that the quantities can be taken exactly according to the scale, since the adhesion of the liquid to the glass was taken into account during calibration. The tolerances for the volume correspond to the error limits of ISO and DIN. DURAN® burettes are available with glass or PTFE keys. Unlike glass keys, PTFE keys do not have to be greased, which simplifies work in the laboratory. Automatic burettes with a batch number and accuracy Class AS are supplied with a batch certificate. This certificate documents the mean value obtained from measuring the batch in question, the standard deviation and the day of issue. The batch certificates can also be retrieved online. The batch number consists of four digits. The first two numbers specify the production year, and the following two numbers specify the batch, e.g.: 18.01.


Catalog No Capacity (mL) Height h (mm) Tolerance (mL) Graduation Intervals (mL) Description Quantity
243182754 10 930 +/- 0.02 0.02 with reservoir bottle (2000 mL) and rubber air pump 1
243183356 25 930 +/- 0.03 0.05 with reservoir bottle (2000 mL) and rubber air pump 1
243183656 50 930 +/- 0.05 0.1 with reservoir bottle (2000 mL) and rubber air pump 1

Available Options

24318275Auto-Burette Class AS Glass Key 10ml x 0.02mlRM1,758.00
2431827Auto-Burette Class AS Glass Key 10ml x 0.02ml, Burette only RM1,189.00
24318335Auto-Burette Class AS Glass Key 25ml x 0.05ml RM1,866.00
2431833Auto-Burette Class AS Glass Key 25ml x 0.05ml, Burette only RM1,243.00
24318365Auto-Burette Class AS Glass Key 50ml x 0.1ml RM1,920.00
2431836Auto-Burette Class AS Glass Key 50ml x 0.1ml, Burette only RM1,298.00