Mastering the Art of Laboratory Glassware
Beakers:
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Low-form Beaker:
- Type: Standard cylindrical shape.
- Use: general mixing and heating of liquids.
- Capacity: Typically ranges from 50 mL to 5000 mL.
- Precautions: Avoid using for precise measurements; not suitable for accurate volumetric work.
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Tall Form Beaker:
- Type: Taller and narrower.
- Use: Primarily used for titrations.
- Capacity: Commonly available in capacities from 100 mL to 2000 mL.
- Precautions: Handle with care during titration; ensure stability.
Volumetric Flasks:
- Volumetric Flask:
- Type: Pear-shaped with a long neck and a single graduation mark.
- Use: Precise preparation of a specific volume of a solution.
- Capacity: Various capacities, e.g., 10 mL, 25 mL, 100 mL.
- Precautions: Handle with care, especially when pouring to maintain accuracy.
Cylinders:
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Graduated Cylinder:
- Type: Straight and tall with graduation markings.
- Use: Measuring approximate volumes of liquids.
- Capacity: Ranges from 10 mL to 2000 mL.
- Precautions: Read the meniscus at eye level for accurate measurements.
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Volumetric Cylinder:
- Type: Narrow with a precise single graduation mark.
- Use: Accurate measurement of liquid volumes.
- Capacity: Available in various capacities, e.g., 10 mL, 50 mL, 100 mL.
- Precautions: Pour and handle carefully to prevent spillage and maintain accuracy.
Burettes:
- Burette:
- Type: Precision instrument for accurate dispensing of liquids.
- Use: Essential for titration experiments.
- Capacity: Commonly available in capacities of 25 mL, 50 mL, and 100 mL.
- Precautions: Rinse with the titrant before use; read the volume at eye level.
Pipettes:
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Volumetric Pipette:
- Type: Used for precise measurement of a specific volume of liquid.
- Use: When high accuracy is required.
- Capacity: Varied capacities, e.g., 1 mL, 5 mL, 10 mL.
- Precautions: Handle with care to prevent breakage; use a pipette bulb for aspiration.
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Graduated Pipette:
- Type: Graduated for general volume measurement.
- Use: Suitable for less critical measurements.
- Capacity: Available in various capacities, e.g., 10 mL, 25 mL, 50 mL.
- Precautions: Handle carefully; read the volume at eye level.
Dispensers:
- Dispenser:
- Type: Various types for dispensing liquids accurately.
- Use: Dispensing precise volumes of liquids in a controlled manner.
- Capacity: Depends on the specific dispenser type.
- Precautions: Calibrate regularly; follow manufacturer guidelines for use.
Syringes:
- Syringe:
- Type: Various types, including glass and plastic syringes.
- Use: Measuring and dispensing liquids in small volumes.
- Capacity: Ranges from 1 mL to 100 mL.
- Precautions: Keep the syringe clean; avoid overloading to prevent damage.
Automatic Pipette:
- Automatic Pipette:
- Type: Electronic or motor-driven pipette.
- Use: Precise and repetitive liquid handling.
- Capacity: Various capacities, e.g., 0.1 mL to 10 mL.
- Precautions: Calibrate regularly; use according to manufacturer instructions.
Micropipette/Microsyringe:
- Micropipette/Microsyringe:
- Type: Designed for microliter measurements.
- Use: Extremely precise liquid handling in the microliter range.
- Capacity: Typically ranges from 0.1 μL to 1000 μL.
- Precautions: Handle with extreme care; use disposable tips for contamination prevention.
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