Separatory Laboratory Funnels
Separatory Laboratory Funnels – Precision Liquid-Liquid Extraction Glassware
The separatory funnel is one of the most fundamental tools in analytical and organic chemistry — and choosing the right one makes the difference between clean, efficient separations and frustrating leaks or contamination. Our Separatory Laboratory Funnels collection is dedicated to this essential piece of glassware, featuring large-capacity conical separatory funnels from Stonylab, engineered to the exacting standards that professional chemists and researchers demand. These are the best-buy separatory funnels for anyone who needs reliable, repeatable liquid-liquid extraction results.
The Science of Separation – What Makes These Funnels Outstanding
Separatory funnels work by exploiting the immiscibility of two liquid phases — allowing chemists to isolate target compounds, remove impurities, and purify solutions with precision. The quality of the funnel directly impacts the quality of the separation. Our Stonylab funnels are built to maximise separation efficiency through:
- Conical body geometry — the tapered conical shape creates a narrow interface zone between phases, making it easier to identify and precisely drain the lower layer without contamination from the upper phase
- Borosilicate glass (Type 3.3) construction — resistant to virtually all common laboratory solvents, acids, and alkalis, ensuring no leaching or reaction with your sample during extraction
- PTFE stopcock — the polytetrafluoroethylene stopcock is chemically inert, requires no grease, and provides a consistently leak-free seal — eliminating the most common failure point of traditional glass-stopcock separatory funnels
- 3,000ml large capacity — accommodates substantial solvent volumes for preparative-scale extractions, multi-step purifications, and industrial research applications
Why These Are the Best Separatory Funnel Buys
- Stonylab precision manufacturing — consistent wall thickness, accurate graduation markings, and tight tolerances for reproducible results
- Grease-free PTFE stopcock — no contamination risk from stopcock grease migrating into your sample
- Thermal shock resistance — borosilicate glass handles temperature changes without cracking, safe for use with heated or cooled solvents
- Two variants available — choose the configuration that best suits your laboratory setup and workflow
- Outstanding value — professional-grade separatory funnels at prices that make them accessible for academic, industrial, and home laboratory use
Achieve cleaner separations with glassware built for the task. Shop Separatory Laboratory Funnels at ALTOE for the best extraction glassware at the best prices available.
