Volumetric Flask — 1000mL, Class A, 24/40 Glass Stopper, Borosilicate

When concentration matters to four significant figures, only a Class A volumetric flask delivers — it's the instrument-grade reference standard for preparing molar solutions.

The single calibration mark at the narrow neck means one unambiguous measurement: fill to the etched line at eye level and your 1.000L of solution is accurate to ±0.4mL (0.04%). This is the vessel used to prepare all standard solutions in analytical chemistry — any lesser accuracy propagates as systematic error through every subsequent calculation. Ground glass 24/40 stopper included.

• 1000mL Class A tolerance: ±0.4mL at 20°C (ISO 1042)
• Single-mark neck; 24/40 ground glass stopper
• Borosilicate 3.3 — temperature stable, solvent resistant
• White enamel calibration line; PE dust cap included

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