DURAN® Burette Amber, Class AS, with PTFE key, 50 mL

with batch certificate and certificate of conformity
  • Complies with ISO 385
  • Manufactured from borosilicate glass 3.3
  • UV protection through amber glass
  • The quantity of liquid required for titration, which is unknown beforehand, can be precisely read off once the reaction is complete.
  • Unlike the glass keys, the PTFE keys need not be greased, which makes work in the laboratory easier.
  • Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature.
  • The volume content tolerances conform to accuracy class AS
  • Easy-to-read scale with graduation marks to estimate the content.
  • waiting time: 30 seconds
  • Fired-on, highly durable white ceramic
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. 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. 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.

Specifications

Specifications
Capacity (mL) 50
Material BORO 3.3, PTFE
Boro 3.3 Borosilicate glass 3.3 has a very good chemical resistance, virtual inert behavior, a high maximum usage temperature, high light transparency and minimal thermal expansion. Borosilicate glass 3.3 has a linear coefficient of expansion of 3.3 × 10−6 K−1 at
Height (mm) 820
Graduation Intervals (mL) 0.1
Tolerance (mL) +/- 0.05
Autoclavable Yes
Retrace Code This is a lot number printed on the product during the manufacturing process used for identification of the production unit, the production work order and for traceability of the materials used.
Quantity 2
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. 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. 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.

Specifications

Specifications
Capacity (mL) 50
Material BORO 3.3, PTFE
Boro 3.3 Borosilicate glass 3.3 has a very good chemical resistance, virtual inert behavior, a high maximum usage temperature, high light transparency and minimal thermal expansion. Borosilicate glass 3.3 has a linear coefficient of expansion of 3.3 × 10−6 K−1 at
Height (mm) 820
Graduation Intervals (mL) 0.1
Tolerance (mL) +/- 0.05
Autoclavable Yes
Retrace Code This is a lot number printed on the product during the manufacturing process used for identification of the production unit, the production work order and for traceability of the materials used.
Quantity 2

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