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China Factory Triangular Flask with Screw Cap - Premium Quality from Reliable Suppliers
Triangular Flask with Screw Cap
- Strong sealing ability
- Heat resistant and anti-corrosion
- Safe and durable
Transparent Triangular Flask with Screw Cap
Brown Triangular Flask with Screw Cap
Product Name: Triangular Flask with Screw Cap
Product Specifications: 50ml-2000ml
Product Material: High borosilicate glass
Product Introduction: High borosilicate glass has a very low coefficient of thermal expansion, about one-third that of ordinary glass. It can withstand high temperatures of 200 °C temperature difference, low expansion rate, high strength, high transmittance, and high chemical stability. The laboratory sterilization temperature standard is 121 °C/134 °C, and the bottle cap can withstand up to 140 °C high temperature. Triangular Flask with Screw Cap is a conical flask. Large base, stable placement. Small mouth size reduces the volatilization of volatile substances and facilitates the installation of other distillation devices, especially reflux devices.
Product Show
- High borosilicate material is acid and alkali resistant, not afraid of high temperatures.
- The sealing inner ring has strong sealing performance, effectively preventing leakage.
- Anti slip bottle bottom concave design stabilizes the bottle body.
Transparent Triangular Flask with Screw Cap Show






Brown Triangular Flask with Screw Cap Show






Product Details Show






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Triangular Flask with Screw Cap Specs
| Item | Description | Picture | Spec | Diameter (mm) | Height (mm) | Weight (g) |
|---|---|---|---|---|---|---|
| 1 | Triangular Flask with Screw Cap (transparent) |
|
50ml-GL25 | 50 | 87 | 50 |
| 2 | 100ml-GL32 | 63 | 116 | 89 | ||
| 3 | 150ml-GL32 | 67 | 119 | 103 | ||
| 4 | 250ml | 79 | 136 | 221 | ||
| 5 | 500ml | 98 | 173 | 292 | ||
| 6 | 1000ml | 124 | 210 | 455 | ||
| 7 | 2000ml | 160 | 277 | 623 | ||
| 8 | Triangular Flask with Screw Cap (brown) |
|
50ml-GL25 | 50 | 90 | 39 |
| 9 | 100ml-GL32 | 56 | 107 | 106 | ||
| 10 | 150ml-GL32 | 65 | 115 | 108 | ||
| 11 | 250ml | 79 | 138 | 231 | ||
| 12 | 500ml | 98 | 166 | 257 | ||
| 13 | 1000ml | 125 | 214 | 485 | ||
| 14 | 2000ml | 160 | 275 | 628 |
Precautions For Use
When heating the triangular flask, asbestos mesh should be placed on it to provide even heating. The triangular flask cannot be heated directly with a flame because the bottom of the flask is large. Heating directly with a flame can only burn to a local area, causing uneven heating of the glass and causing it to explode. When heating, the outer wall of the triangular flask must be wiped dry.
Frequently Asked Questions (FAQ)
What are the advantages of High Borosilicate Glass used in this flask?
High borosilicate glass has a very low coefficient of thermal expansion (about one-third of ordinary glass). It offers high strength, high light transmittance, high chemical stability, and can withstand a temperature difference of up to 200 °C.
What temperature limit can the screw cap withstand?
While the laboratory sterilization standard temperature is 121 °C / 134 °C, the bottle cap is designed to withstand high temperatures of up to 140 °C.
Why is the flask designed with a triangular (conical) shape and a small mouth?
The large base ensures stable placement. The small mouth size reduces the volatilization of volatile substances and simplifies the installation of other distillation devices, especially reflux devices.
What capacity options are available for the Triangular Flask with Screw Cap?
The product specifications range from 50ml to 2000ml, and it is available in both transparent and brown glass options to suit different laboratory needs.
How can I heat the triangular flask safely without breaking it?
You must place an asbestos mesh on it to ensure even heating and wipe the outer wall dry before heating. Never heat the flask directly with a flame, as the large base will cause uneven heating and lead to an explosion.





