What is volumetric pipettes?

Volumetric pipettes are laboratory tools that are used to measure and transfer a specific volume of liquid. These pipettes can be made of glass or plastic and have a bulbous chamber at the top, a tapered neck, and a narrow tip at the end that is designed to release the liquid in a controlled manner.

Volumetric pipettes come in a range of sizes from microliters to milliliters and are typically used for precise and accurate measurements of solutions. Unlike other types of pipettes, which may have a variable volume depending on the position of the plunger or the level of the liquid inside, volumetric pipettes are designed to dispense a precise volume of liquid every time, making them ideal for use in analytical chemistry and quality control applications.

To use a volumetric pipette, the user first fills the pipette with the liquid they wish to measure. The pipette is then held at a 45-degree angle, and the liquid is allowed to flow out until the meniscus (the curved surface of the liquid) is exactly at the zero mark on the pipette. The pipette is then lowered into the receiving vessel, and the liquid is dispensed by slowly releasing the bulb at the top.

Proper care and maintenance of volumetric pipettes are critical to ensure their accuracy over time. They should be washed and dried carefully after use and stored in a vertical position to prevent damage to the tips. Additionally, regular calibration and verification of the pipette's accuracy are necessary to ensure reliable and consistent results.