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Our PTFE Stopcock Separatory Funnel is engineered for superior chemical resistant performance in demanding lab environments. Crafted from high-purity borosilicate glass and fitted with a precision PTFE stopcock, it ensures leak-free operation and exceptional resistance to aggressive solvents, acids, and bases. The inert PTFE construction prevents contamination, making it ideal for liquid-liquid extraction, organic synthesis, and analytical sample preparation.
As a trusted supplier, we offer custom designs (e.g., varying capacities, graduated scales) and provide replacement PTFE stopcocks for existing funnels. Our products comply with international lab standards, ensuring reliability and reproducibility in research and industrial processes.
Contact us for tailored solutions and bulk orders.
Excellent Chemical & Physical Properties:
Extremely strong chemical inertness (the core advantage)
PTFE is known as the “plastic king” and hardly reacts with any known strong acids, bases, oxidants, organic solvents, etc.
Tolerant reagents include aqua regia, hydrofluoric acid (HF), hot concentrated sulfuric acid, nitric acid, hydrochloric acid, chromic acid, various organic solvents (such as acetone, benzene, alcohols), etc.
This feature ensures that the stored samples are not contaminated by the container and also guarantees that the container itself is not corroded.
Extremely low leaching and adsorption of metal ions
The surface of PTFE is smooth and dense, and it hardly adsorbs trace elements and components in the sample.
The content of self dissolved metal ions is extremely low, which is crucial for trace analysis (such as ICP-MS, ICP-OES, AA, etc.), effectively avoiding background contamination and ensuring the accuracy of analysis results.
Excellent thermal stability
It can usually be used for a long time within the temperature range of -200 ° C to+260 ° C.
Short term tolerance to higher temperatures (such as 300 ° C) makes it suitable for hydrothermal reactions, high-temperature digestion, or high-temperature sample storage.
Excellent non stickiness and surface smoothness
The surface friction coefficient is extremely low, does not adhere to any substances, is easy to clean and pour out viscous reagents, and there will be no residue.
High purity and good electrical insulation
| Weight | N/A |
|---|---|
| Capacity-G | 125ml, 250ml, 500ml |
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