How to Use a Graduated Pipette: Correct Filling and Delivery Techniques #252257 (License: Personal Use)

The image illustrates three standard TD (To Deliver) 20°C graduated pipettes, demonstrating correct calibration marks and operational instructions. One pipette shows filling to the 3.2 mL mark, another indicates the “empty (blow out)” position at the tip, and the third clarifies that for most pipettes, you should drain to the 3.2 mL line and stop-without blowing out the remaining liquid. These details ensure volumetric accuracy in analytical chemistry and laboratory protocols.

This image is used in educational lab manuals, chemistry training modules, or SOP documentation to teach accurate pipetting technique. It addresses user intent for learning correct measurement procedures, avoiding volumetric errors in experiments or quality control.