Pipetas aforadas | 6 | Material de laboratorio
What Are Volumetric Pipettes and How to Use Them?
Introduction to Volumetric Pipettes
- The video introduces volumetric pipettes, describing them as long, narrow glass tubes with a characteristic widening in the middle and a conical shape at the bottom.
Types of Volumetric Pipettes
- There are two types of volumetric pipettes:
- Single mark at the top of the wide section.
- Two marks: one at the top and another near the lower opening.
Precision and Usage
- These pipettes are high-precision volumetric tools that measure specific volumes accurately, similar to graduated flasks. For example, a 10 mL pipette measures exactly 10 mL.
Operation Steps
- To use a volumetric pipette:
- Suck liquid above the mark.
- Carefully release until it reaches the mark without spilling any drops for accuracy.
Safety Considerations
- Emphasizes safety precautions due to fragility:
- Never aspirate liquids using your mouth; always use designed pipette fillers.
Conclusion on Usage Experience