Single-Blind Research Method. The Single-Blind research method is a specific research procedure in which the researchers (and those involved in the study) do not tell the participants if they are being given a test treatment or a control treatment. This is done in order to ensure that participants don't bias the results by acting in ways they think they should act.
They provide accurate measurements of very small volumes of liquids in the userâs quest to obtain correct test results. But pipettes are mechanical devices that require regular calibration service to maintain their accuracy and precision. The similarities are not unlike the maintenance of your car. Without regular service and repair, your car can break down, leave you stranded and result in high repair costs. Pipettes are no different.
Mohr and Serological Pipettes. Measuring pipettes are further subtyped into Mohr pipettes and serological pipettes. The difference between these two types is that Mohr pipettes' hash marks, or gradations, always end before the pipette's tip, while serological pipettes have gradations that continue down into the tips.