Available in mechanical and electronic form. Pasteur pipettes (or pipets) are the most commonly used tool for transferring small volumes of liquids (< 5 mL) from one container to another. The key difference is they are controlled by automation software and typically have mounting points for automation instead of handles for humans.ĭispenser / positive displacement pipettes: Positive displacement pipettes rely on syringe-like consumables for aspiration and dispensing. Electronic pipettes typically reduce human variance, improving accuracy and reproducibility.Īutomation pipettes: Automation pipettes are similar to electronic. The user only has to press a button to start aspiration, liquid dispensing or tip ejection. User is able to set volume and use a plunger to aspirate and dispense liquid.Įlectronic pipette: The basic operating principle of electronic pipettes is the same as with mechanical, but all actions are handled by an electronic system inside. These pipettes always use disposable pipette tips.
quality assurance by the supplier, analytical and measuring equipment quality assurance by the. Sartorius pipettes and pipette tips raise your pipetting to a whole new level ensuring repeatable and reliable results. Alternative test methods such as photometric and titrimetric methods will be the subject of a future Part 7 to ISO 8655. Three key factors ergonomics, design and reliability form the cornerstone of our products. Manual pipettes aspirate and dispense liquid with piston system driving air cushions. Conformity testing (type evaluation) of piston-operated volumetric apparatus is given in ISO 8655-6.
Mechanical / manual pipettes: A workhorse of most laboratories and widely used in various applications.
Volumetric pipettes rely on users for measurement of volume and require a separate device for aspiration and dispensing - such as the Midi Plus pipette controller. Their volumes generally range between 1mL - 100mL. Volumetric pipettes: Volumetric pipettes are typically made of plastic or glass and have graduation marks.
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