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Advantages of using E-Burettes over Glass Burettes and Digital Burettes



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Advantages of using E-Burettes over Glass Burettes and Digital Burettes

  1. 1. How E-Burettes are better than glass burettes and digital burettes.
  2. 2. What is a Burette? A burette is laboratory equipment commonly used to carry out titration. Titration is a technique where a solution of a known concentration (titrant) is used to determine the unknown concentration of a second solution (analyte). A visual indicator usually signals the completion or the end-point of the experiment. There are three types of burettes that can be used to perform a titration experiment. These include: • Glass Burettes • Digital Burettes • Electronic Burettes
  3. 3. Glass Burette One of the most conventional and widely accepted instruments to perform titration is the glass burette. It is typically available in the form of a long, graduated glass tube with a stopcock at its lower end and a tapered capillary tube at the stopcock's outlet. The stopcock valve controls the flow of liquid from the tube to the tip of the burette. The difference in the initial volume and the final volume of the solution in the burette reflects the amount of the solution consumed.
  4. 4. Glass Burette Though this instrument is cost effective but due to its manual operation, the results obtained from a glass burette may have a relatively low accuracy and precision. Also, it is a little challenging to use this instrument for performing a titration experiment. Some of the problems faced while working with a glass burette are listed below: • Potential problems related to filling the glass burette till a particular volume arise. • The valve tightness and security is a common challenge while using a glass burette. If not secured properly, there will be leakage leading to inaccuracy. • The correct titration speed has to be found, purely by hit and trial. Too slow, and the titration period is unnecessarily prolonged; too fast, and the equivalence point is exceeded. • Manual recording of the readings if not done with vigilance can mess up the end result.
  5. 5. Digital Burette Digital burettes are a good alternative to the glass burettes. These digital burettes are directly attached to a bottle filled with the titrating solution. A hand-wheel is present which is rotated manually to perform titration. The liquid is filled in and dispensed by rotating the hand-wheel in the up and down directions respectively. The titration readings are shown on the burette screen. The burette can also be connected to a computer and the readings can be saved on the same. Using a digital burette, hazardous titrating solutions can be handled without worrying about spillage, thereby ensuring user safety. Thus, a digital burette minimizes the risk posed by multiple sources of error that might occur in titrations with conventional glass burettes. However, it cannot ultimately provide the most accurate and precise results.
  6. 6. Digital Burette The manual rotation of wheel for dispensing and filling a digital burette can become a source of error in the readings obtained from a digital burette. The wheel rotation speed is not fixed and varies from user to user. These abrupt changes in speed can lead to inaccurate and imprecise results. Also, the hand wheel rotation can increase strain when multiple titrations are preformed.
  7. 7. Electronic Burette (E-Burette) Electronic Burette or Microlit E-Burette is an advanced version of the digital burette. The manual hand wheel rotation has been replaced by a motor driven piston. E-Burette has been designed keeping ergonomics and intuitive handling in mind. It offers sophisticated features and functionality like motor controlled piston movement, a touch screen enabled control panel with graphical user interface (GUI), and calibrated pre-set speeds to perform highly accurate titrations.
  8. 8. Features offered by Microlit E-Burette 3 Pre-set Speeds for Dispensing MICROLIT E-BURETTE comes with 3 Calibrated Pre-set Speeds, including dropwise dispensing. • High Speed Dispensing: Dispenses at 1.517 ml/sec • Low Speed Dispensing: Dispenses at 0.491 ml/sec • Dropwise Dispensing: Dispenses at 0.010 ml/sec The presence of dropwise dispensing feature helps in achieving the end-point of titration experiment accurately.
  9. 9. Features offered by Microlit E-Burette Motor Controlled Piston Movement In conventional Digital Burettes dispensing is done ‘manually’ with the help of a rotating wheel whose speed of rotation is not fixed and varies from user to user. Any abrupt changes in the speed may result in inaccurate and imprecise results as per ISO 8655 standards guidelines. The motor controlled piston movement of MICROLIT E-BURETTE rules out manual-hand-wheel- operation and inconsistencies arising due to variations in user speed as it is individually calibrated at three pre-set speeds. This eliminates human error making it ‘Real Automated Motorized Burette’. This ensures highest accuracy & precision.
  10. 10. Features offered by Microlit E-Burette Re-direct Reagents with Recirculation Mode Recirculation Mode prevents the loss of reagents during purging by re- directing them into the mounted bottle and facilitates bubble free dispensing.
  11. 11. Features offered by Microlit E-Burette Dispense Easily with FlexiNozzleTM FlexiNozzleTM is an adjustable delivery nozzle. It offers a high degree of flexibility, facilitating easy dispensing in demanding laboratory conditions.
  12. 12. Features offered by Microlit E-Burette Enhanced Functionality with a Robust Control Panel to perform quick titrations A user-friendly TFT touchscreen guides quick and accurate titrations and displays numeric data up to the second decimal. Keep the stylus pressed against it to perform dispensing and lift it to stop the dispensing at once. A powerful, multi-functional Control Panel forms the brain of the instrument. Use it to perform functions like automatically re-fill without changing the reading, perform a zero reset (via tare), switch the instrument off, among many more.
  13. 13. Glass Burettes VS Digital Burettes VS MICROLIT E-Burette Features Glass Burettes Digital Burettes MICROLIT E-Burette Motorized piston movement No No Yes On touch refill No No Yes Calibrated pre-set speeds No No Yes Digital reading No Yes Yes
  14. 14. www.microlit.com