======Using a Burette======


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**Alternative titles:** Burette Technique for Liquid Measurement
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====Summary====                   
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====Procedure====  
  - Rinse the burette 2–3 times with the liquid you intend to use, rotating it to coat all interior surfaces; drain through the stopcock into waste.  
  - Clamp the burette securely to a ring stand using a burette clamp.  
  - Fill the burette with the liquid; note the starting volume (not necessarily at 0.00 ml). Use a sheet of white paper behind the burette to aid reading.  
  - Open the stopcock slowly to allow the liquid to drain into the receiving vessel.  
  - Once the desired amount is dispensed, close the stopcock and touch the burette tip to the vessel wall to remove any drops.  
  - Record the final burette reading.  
  - Calculate the delivered volume by subtracting the initial reading from the final reading. Example: 24.34 ml – 21.36 ml = 2.98 ml delivered.  
  - Drain any remaining liquid and rinse the burette with water before storage.



====Links==== 
How to use a burette - ISU Gen Chem Lab Tutorials: 
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How to Use a Buret - Supreme Science: 
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📄 Using a Buret - Harper College: [[https://dept.harpercollege.edu/chemistry/chm/100/dgodambe/thedisk/labtech/burtech.htm]]\\


====Variations====
  * Use different sizes of burets (5 ml, 25 ml, 50 ml, 100 ml) depending on the accuracy required.



====Safety Precautions====
  * Always wear safety goggles and a lab coat when handling chemicals.  
  * Ensure the burette is securely clamped to prevent tipping or spilling.  
  * Dispose of waste liquids properly; never return them to stock bottles.  
  * Rinse thoroughly with water after use to prevent chemical residue buildup.




====Questions to Consider====
  * Why is it important to rinse the burette with the solution to be used rather than water? (It prevents dilution of the solution and ensures accuracy.)  
  * Why are burette markings reversed compared to a graduated cylinder? (Burets measure the amount delivered, so volume decreases as liquid is dispensed.)  
  * How do you minimize reading errors when recording burette volumes? (Use a white background, read at eye level at the bottom of the meniscus, and avoid parallax error.)