The most common question about why does alcohol drip from pipettes is how to fix this problem. First, you need to know the type of pipette you have. Some types have a metal tip that isn't meant to leak, while others have a plastic one. In either case, you need to make sure the pipette tip fits the pipette correctly. To fix the problem, you'll have to change the tip.
The most common cause of alcohol drip from a pipette tip is the type of adapter used to deliver the liquid. A pipette that is calibrated to deliver liquid is marked with a double ring near the top. During a sample, it is important to use a to-deliver pipete and pressurize the bulb to remove any residual liquid. However, the other two types of pipettes are not intended to deliver liquid.
Besides, they're designed to hold volatile liquids, like alcohol and acetone. When you use a classic pipette, the sample liquid and the piston are separated by an air cushion. Because volatile substances are more volatile than water, they'll evaporate much faster than water, and the expanding air cushion pushes the liquid out of the pipette's tip.
Another common cause of alcohol drips from pipettes is improper pipetting technique. When you are working with reagents, you'll have to make sure the tip is below the ground glass joint. If you don't, the liquid could splash onto the ground glass and cause pieces of the glassware to freeze when connected. To prevent this problem, it's best to avoid using a reagent-filled pipette that drips alcohol.
To prevent alcohol drips from pipettes, make sure the pipette tip is closed tightly after aspiration. The tip should be held with a finger and brought to the flask. Allow the liquid to drain out of the pipette. This can be fixed by withdrawing the liquid, expunging it, or using a solvent-free solution. You'll need a bottle of solvent to fill it to avoid this problem.
When pipettes drip, it's due to the fact that the tip of the pipette has an inadequate vacuum pressure. In this case, the liquid will evaporate into the headspace of the pipette, which has greater pressure than the atmospheric atmosphere. This will cause alcohol to drip from the pipette tip. In order to prevent this problem, you must try to prevent the liquid from dripping.
While this problem doesn't happen frequently, it is important to identify the culprit. The most common cause of alcohol dripping from pipettes is the failure of the pipette to be able to deliver the correct volume. It can also contaminate the samples in the lab and bench space. To solve the problem, you should follow the steps mentioned in the following article. You can also try to prevent dripping alcohol from the tip by increasing the volume of the bottle.
In most cases, the problem can be solved by cleaning the pipette. Once the tip has been cleaned, it is necessary to condition it by rinsing with reagent two times and collecting it in a waste container. Then, you can attach the bottle to the top of the pipette and allow the liquid to drip. If the liquid drips from the tip, it can contaminate the other samples and the bench space. Moreover, it may lead to the leaking of the sample into the liquid.
In case of ethanol or acetone, the problem is due to the fast-evaporating liquid. This liquid drips out of the pipette tip when it is exposed to lower-than-regular air. This is a sign of a malfunctioning device. If the problem persists, replace the pipette. It may have been caused by an improperly sealed tube.
During aspiration, ethanol or acetone drips from the pipette tip. This is a common problem and should be corrected as soon as possible. To avoid contamination, make sure that you have the right types of pipette for the type of sample you're working with. A few minor changes can make a big difference in your results. You can solve this problem yourself by following a few simple guidelines and tips.