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.

 

Products

Catalog No	Capacity (mL)	Height h (mm)	Tolerance (mL)	Graduation Intervals (mL)	Remarks	Quantity
243282703	10	820	+/- 0.03	0.02	–	2
243283305	25	820	+/- 0.04	0.05	–	2
243283605	50	820	+/- 0.08	0.1	–	2
243283905	100	870	+/- 0.15	0.2	Non-DIN/ISO size.	2