Volumetric Flask Glass Pyrex
A volumetric flask is a highly precise piece of laboratory glassware used for preparing and measuring accurate liquid volumes. Pyrex volumetric flasks are renowned for their high-quality borosilicate glass construction, offering excellent chemical and thermal resistance. Below are the typical specifications for Pyrex volumetric flasks:
General Specifications:
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Material
- Borosilicate glass (resistant to thermal shock, chemical attack, and mechanical stress).
- Capacity:
- Available sizes: 25 ml, 50 ml, 100 ml, 250 ml, 500 ml, 1000 ml, and larger.
- Accuracy:
- Tolerance varies by size, typically ranging from ±0.02 mL for smaller sizes (e.g., 10 mL) to ±0.30 mL for larger sizes (e.g., 1000 mL).
- Markings:
- Single graduation mark on the neck for precise volume measurement.
- Permanent, white or amber enamel markings.
- Stopper:
- Supplied with either glass or plastic stoppers (standard ground glass joint or polyethylene stopper).
- Neck Design:
- Narrow neck for precise meniscus alignment.
- Designed to reduce evaporation and contamination.
- Temperature Resistance:
- Can withstand high temperatures for sterilization (e.g., autoclaving).
- Chemical Resistance:
- Resistant to most acids, alkalis, and organic solvents.
