Description
The Pear Shape Flask Single Neck from Osmosis Scientific is a precision-manufactured laboratory vessel designed for controlled heating, chemical reactions, and distillation processes. Manufactured from premium borosilicate glass 3.3, the flask provides excellent resistance to thermal shock and aggressive chemicals, ensuring reliable performance in research, industrial, and educational laboratories.
Its distinctive pear-shaped body supports uniform heat distribution and efficient reaction control, making it ideal for applications requiring stable temperature exposure. The single neck design features a 14/23 ground glass joint, allowing secure attachment to condensers, adapters, and other laboratory apparatus for closed-system operations.
Available in 25 ml, 50 ml, and 100 ml capacities, this flask supports small-scale reactions and analytical procedures requiring precision and consistency. The robust borosilicate construction ensures durability during repeated heating cycles, while the smooth glass surface allows easy cleaning and contamination-free use.
This pear shape flask is widely used in chemical synthesis, solution preparation, heating under controlled conditions, and laboratory distillation assemblies. Its combination of thermal stability, chemical resistance, and precision design makes it a dependable choice for professional laboratory workflows requiring consistent results and safe operation.
| Capacity (mL) | Socket Size | Approx. Dia (mm) | Overall Height (mm) | Pack of | SKU | Enquiry |
|---|---|---|---|---|---|---|
| 25 | 14/23 | 42 | 90 | 10 | PSFSN-0025 | Enquire Now |
| 50 | 14/23 | 51 | 100 | 10 | PSFSN-0050 | Enquire Now |
| 100 | 14/23 | 64 | 130 | 10 | PSFSN-0100 | Enquire Now |
Frequently Asked Questions (FAQs)
While both handle heat well, the pear shape is superior for small-quantity distillations and reactions where you need to collect every last drop of a sample. The narrow base concentrates the liquid into a smaller area, making it easier to reach with a pipette or spatula.
Yes. Due to the heavy-wall construction and the strength of borosilicate glass, pear-shaped flasks are designed to withstand the pressures associated with vacuum distillation and rotary evaporation.
These flasks are typically manufactured from High-quality Borosilicate 3.3 glass. This ensures:
- Excellent thermal shock resistance.
- High resistance to chemical erosion.
- Mechanical strength for vacuum applications.
- Routine: Use a mild laboratory detergent and a flexible brush that can reach the tapered bottom.
- Sterilization: They are fully autoclavable.
- Caution: Avoid using abrasive cleaners or metal tools that could scratch the interior, as scratches can lead to stress fractures during heating or vacuum use.
Most professional-grade pear flasks are designed to comply with international metrology and laboratory standards such as ISO 4797 or equivalent ASTM/DIN specifications.
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