1. What is a 100 ml Volumetric Flask?

Definition: A volumetric flask is a piece of laboratory glassware calibrated to contain a precise volume of liquid at a specific temperature.

Purpose: Used for precise measurement and preparation of standard solutions in analytical chemistry and other laboratory applications.

2. Key Specifications

Standard 100 ml volumetric flask characteristics:

Where:

• \( V \) — Nominal volume (100 ml)
• \( \pm 0.08\ \text{ml} \) — Tolerance for Class A flasks
• \( 20°C \) — Standard calibration temperature

Note: Class B flasks typically have double the tolerance of Class A.

3. Importance of Volumetric Flasks

Details: Provides highest accuracy for liquid measurements in analytical work. Essential for preparing standard solutions, dilutions, and quantitative transfers.

4. Proper Usage Guidelines

Tips:

• Always use at calibrated temperature (20°C)
• Fill to the calibration mark on the flask neck
• Use with clean, dry surfaces for accurate measurements
• Never heat volumetric flasks

5. Frequently Asked Questions (FAQ)

Q1: Why is the calibration temperature important?
A: Glass expands/contracts with temperature changes, affecting volume measurements. 20°C is the international standard.

Q2: What's the difference between Class A and Class B?
A: Class A has tighter tolerances and is more precise (±0.08 ml vs ±0.16 ml for 100 ml flask).

Q3: Can I use this for organic solvents?
A: Yes, but check chemical compatibility with glass. Some solvents may require special glass types.

Q4: How should I clean a volumetric flask?
A: Use appropriate laboratory detergents, rinse thoroughly with distilled water, and never use abrasive cleaners.

Q5: What does "TC" mean on the flask?
A: "To Contain" (TC) means it's calibrated to contain the stated volume, as opposed to "TD" (To Deliver) which is calibrated to dispense that volume.