It is always a good idea to rinse and purge your burette.Improperly purge burettes could result in inaccurate results.Before and after each use, make sure your burette is clean.
Step 1: The burette should be filled with 5 liters of distilled water.
It's important to use distilled water for your experiment.If you want to get rid of particles, fill the burette from the top and then run the water down the sides.Before you fill the burette, make sure the stopcock is closed.
Step 2: To coat the sides of the burette, tilt it horizontally.
You want the water to come in contact with as much of the burette side wall as possible.The top of the burette has a rinse.For each rinse, be sure to swirl the water around the tube thoroughly.
Step 3: The water should rinse the entire burette.
The burette should be kept horizontal so that the water can rinse the inside.You may need to clean the burette more thoroughly if you see water droplets on the sides.
Step 4: Open the stopcock valve with the burette back to vertical.
When you get the burette back into a vertical position, you can open the stopcock valve.The burette should be held over the sink or waste container to keep the liquid out of the bottom.
Step 5: Let the liquid run out of the bottom.
When the valve is open, watch the water level drop until it goes through the tip.The burette's tip is cleaned.The burette has liquid pouring out of it.
Step 6: The whole rinse should be repeated at least 2 more times.
Make sure the stopcock is closed by filling the burette with distilled water.To coat the inside with the water, tilt the burette horizontally.Hold it vertically and let the water go through the bottom tip.To pour out the remaining volume, flip the burette.You should rinse the burette at least 3 times.
Step 7: The rinse cycle should be repeated with the solution.
Before starting your experiment, rinse the burette several times with the titrant.The concentration of the solution is what you expect it to be.The rinses are important to get the water out of the burette so it doesn't affect the solution.Since you know the concentration of the solution, you can use it to find out how much analyte is in it.Gloves are needed to avoid contact with harmful chemicals.
Step 8: After use, rinse with distilled water.
After an experiment is over, rinse the burette with distilled water.Make sure the burette coats the tube and then run the water through it by opening the stopcock valve.If you were going to use distilled water, make sure you rinse the burette with lots of tap water.
Step 9: Do you see droplets on the side?
The burette is still dirty and needs more than water to be cleaned.The burette should be soaked in the detergent and washed thoroughly.After cleaning with a detergent, be sure to rinse many times and check for droplets on the side.No droplets should form if the burette has been well cleaned.Allow the glassware to dry.Don't dry with towels as they can leave fibers behind and cause harm to the burette.
Step 10: The burette top should be covered with a cap.
It is a good idea to put a paper cap on the burette once it is dry.Dust can get into the burette if it is sitting for a long time.You can make the caps by twisting one end of a tube.
Step 11: The burette can be kept in a glass locker.
glassware should be stored in a glass locker or caseIf you have a burette cabinet, make sure the burettes are placed in the correct direction with the stopcock valve placed towards the wall.When you open the door, improper placement of burettes can cause them to fall out.