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.
Always use a new pipette and dispose of it after testing, aspirate liquid at a 90 degree angle, dispense at a 45 degree angle, and touch off to make sure all the liquid is dispensed. Graduated/Serological Pipette: When using this type of pipette, the final volume is found by calculating the difference of the liquid level before and after liquid is dispensed, much like a burette. This is the standard technique for using a graduated pipette: Hold pipette in solution, donât touch the bottom.