Plastic bulb pipettes are generally not precise enough to be used for exact measurements, whereas their glass counterparts can be extremely precise. [9] Other usages [ edit ] Microscale column chromatography [ edit ] Column chromatography constructed using plastic pasteur pipette

Different medicine droppers have different markings, so it's important to use the correct dropper that corresponds to your medication. Seely, Oliver. "Helpful Hints on the Use of a Volumetric Pipet". www.csudh.edu . Retrieved 2017-06-13. Step 3: Squeeze the rubber bulb or top of the dropper to expel any air that may have accumulated in the dropper. give you information in the language you prefer. Having an interpreter help give you instructions, and having information written down in the language you prefer, means that you will be less likely to make an error. If you are on your own, wrap a blanket around your baby’s arms so that you can stop him struggling and hold him steady.Look very carefully at how the dose amount is written. Be especially careful if you see a period (".") in the middle of the number. For example, "0.5 mL" is not the same as "5 mL". Mixing these up can mean giving 10 times more medicine than your child needs. Or it may mean giving your child 10 times less medicine. A: The dropper can be sterilized by boiling in water for a few minutes or by using ethyl alcohol or hydrogen peroxide. Pasteur pipettes can also be used for microscale distillation. [12] The liquid to be distilled is placed into a small reaction tube along with a boiling chip and heated to reflux one-half to two-thirds of the way up the inside of the tube. After squeezing the bulb to expel air, a pasteur pipette is inserted into the tube just below the level of the ring of refluxing liquid (into the vapor). The vapor is then drawn into the relatively cold pipette tip, causing it to condense and accumulate inside of the pipette. It's important to read the medication label carefully to determine the correct amount of medication to be administered.

The original purpose of the pipet was to transfer small quantities of medicine or fluid without contamination. The bulb at the end helps control the fluid, allowing much safer and better manipulation than with a teaspoon or similar device. Medicine droppers are used to apply eye medication, drip out essential oils and other types of medications. Louis Pasteur is known around the world as the man who discovered that heating food and drink helped keep these products safe from contamination. But he invented the process of pasteurization because of an earlier theory he came up with, Germ Theory. Pasteur correctly deduced that microbes were responsible for the spread of disease.Using a medicine dropper may look simple, but there are certain steps you need to follow to do it properly. A: It's generally not recommended because it can cause cross-contamination, and there may be chemical reactions between different medications. With a bit of skill, Pasteur pipettes may also be used for microscale column chromatography. With appropriately fine silica gel, the bulb may be squeezed for microscale flash column chromatography. [11] Microscale distillation [ edit ] Plastic Pasteur pipettes are often used in biology where most media are aqueous and solvent resistance is not important. (Most organic solvents, such as hexane and acetone cannot be used in plastic Pasteur pipettes as the solvent can dissolve the plastic.) The pipettes are also hard to wash and are usually discarded with other biohazard waste after one use. [9]