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EPPENDORF Top Buret™
Our innovative Top Buret sets new standards for manual titration. Its pulse-free dispensing technique allows the disired volumes to be dispensed continously, thus making titration simpler and safer, with precision values well within required limits. This bottle top burette is extremly sturdy, and its user-friendly display and control features provide simple operation.
The Bottletop Buret from Brinkmann sets new standards for manual titration. The pulse-free dispensing technique allows the desired volumes to be dispensed continuously. This makes titration simple and easy, with precision values well within the required limits.
The volume is dispensed by simply rotating the wheels. The Model 25 dispensing rate is 2,500 µL per rotation, and the Model 50 dispensingrate is 5,000 µL per rotation. The display ranges from 0.01 mL to 999.9 mL.
The Brinkmann Bottletop Buret is extremely sturdy, and its display and control elements provide an easy, fatigue-free operation.
Continuous, pulse-free dispensing technique for rapid titration
Patented safety valve for deairing without loss of reagent
Voltage supply with long-life primary cells and charging display
Dispensing range from 0.01 ml to 999.9 ml
Removable electronics unit
Modular, service-friendly construction
Simple calibration program l Discharge tube can be rotated 360°
Adjustable filling tube horizontal: 142–220mm vertical: 10–200 mm
Telescopic filling tube for automatically setting the length from 210 mm to 370 mm
A dispenser, such as the Eppendorf Varispenser, delivers a preset volume. A reciprocating pump is used to draw up the required volume and deliver it at once. This process is particularly suitable for identical volumes which are dispensed frequently. With a TopBuret an unknown volume is delivered. With analytical procedures such as the determination of a pH value or titration, liquid is supplied until the required effect occurs. The quantity of liquid delivered is then read off at the burette. During dispensing the liquid is not delivered from a reservoir but is supplied continuously from the bottle.
The difference is the amount of liquid that can be dispensed by turning the dispensing wheel one revolution. It is possible to dispense 2.5 ml per revolution with Top Buret M, and 5 ml per revolution with Top Buret H.
The maximum volume per time unit that can be dispensed (limited by the flow resistance) is 1.25 ml/sec for the TopBuret M and 2.5 ml/sec for the TopBuret H, since one revolution should not be faster than 2 sec for reasons of accuracy. 2.5 ml/revolution can be dispensed with the TopBuret M and 5 ml/revolution for the TopBuret H.
The device as a whole cannot be autoclaved, but the telescopic filling tube made of fluorocarbon can be autoclaved up to the permitted temperature of 121 °C. It is important not to separate the two parts of the tube for autoclaving and to wait for the tube to cool down completely before inserting it back in the Top Buret.
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