In air displacement pipettes, a certain volume of air remains between the piston and the liquid. In positive displacement pipetting, the piston is in direct contact with the liquid. Complete the form and download a pdf version of the GLP Guide.

Piston-driven air displacement pipettes are a type of micropipette, which are tools to handle volumes of liquid in the microliter scale. They are more commonly used in biology and biochemistry, and less commonly in chemistry; the equipment is susceptible to damage from many organic solvents.

There are many types of air and positive displacement micropipettes available commercially, such as singlechannel, multi-channel, manual or electronic, etc. with several accessories to perform experiments in Biomedical Sciences and related disciplines [6 - 8] ( Figure 1). Figure 1.

2024年5月14日 · An air displacement pipette (also known as a “volumetric pipette” or “mechanical pipette”) is a type of liquid handling tool commonly used in laboratory settings. It uses air displacement to draw a specific volume of liquid into the pipette’s barrel.

Air displacement micropipettes are a type of adjustable micropipette that deliver a measured volume of liquid; depending on size, it could be between about 0.1 µl to 1,000 µl (1 ml). These pipettes require disposable tips that come in contact with the fluid.

2022年7月19日 · Air displacement micropipette. The piston is inside the pipette. There is an air cushion between liquid and piston. During aspirating liquid, the piston displaces an equal volume of air to the volume adjusted in the micropipette. The temperature and viscosity of the liquid greatly influence the precision of the air displacement micropipette.

2024年4月3日 · Air displacement pipettes work by creating a vacuum to aspirate the liquid into the pipette tip, while positive displacement pipettes use a disposable piston to physically displace the liquid.

2021年1月20日 · Air Displacement Micropipette: This type of micropipette works on the air displacement principle. It consists of a piston that aspirates and dispenses liquid samples as the air pocket moves up and down, respectively.