Quartz Pressure-Equalizing Dropping Funnel with PTFE Stopcock

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1200°C High Temp Resistant

High Transmittance

Complete Specifications

Aoxin Quartz manufactures high-quality Quartz Pressure-Equalizing Dropping Funnels (also usable as Separatory Funnels) equipped with chemically resistant PTFE stopcocks. These funnels are essential for the controlled addition of liquids to reaction mixtures, especially in closed systems, or for efficient liquid-liquid extractions. Crafted from high-purity fused quartz, they offer superior chemical inertness and thermal stability. The integrated pressure equalizing arm ensures smooth, continuous liquid flow without pressure buildup, while the precision PTFE stopcock provides excellent flow control. Standard taper ground glass joints allow for easy connection to various laboratory setups.


  • Product Name : Quartz Pressure-Equalizing Dropping Funnel with PTFE Stopcock
  • Material : 99.99 % Purity Quartz
  • Work Temperature~1200℃
  • Soften point : ~1730℃
  • Hardness :  5.5 – 6.5 Mohs’ Scale 570 KHN 100
  • Tensile Strength : 4.8×107 Pa (N/mm2) (7000 psi)
  • Compression Strength : >1.1×109 Pa (160,000 psi)
Clear quartz dropping funnel with PTFE stopcock and pressure equalizing arm, angled view on a dark blue reflective surface

  • Smooth & Controlled Addition: The pressure equalizing arm allows for uninterrupted, gravity-fed liquid addition to closed systems without pressure issues.
  • Precise Flow Control: The high-quality PTFE stopcock provides excellent, leak-free control over the dispensing rate, from dropwise to a steady stream.
  • Superior Chemical Resistance: Both the quartz body and the PTFE stopcock are highly resistant to a wide range of aggressive chemicals and solvents.
  • High Purity & Inertness: Ideal for applications where sample purity is critical, as quartz minimizes leaching and contamination.
  • Versatility: Can function as both a dropping funnel for reagent addition and a separatory funnel for liquid-liquid extractions.
  • Thermal Stability: Quartz construction allows for use with solutions at various temperatures and enables easy sterilization.
  • Clear Visibility: Transparent quartz allows for easy monitoring of liquid levels, flow rates, and phase separation during extractions.
  • Standardized Connections: Equipped with standard taper ground glass joints for compatibility with other laboratory glassware.

Contact Us

Address

No.39 Shixian West Road, Huifeng Township, Donghai County,Lianyungang,Jiangsu, China

Send Us a Message

Here\’s how you can contact us for any questions or concerns.

+8618961320658
08.00am – 06.00pm
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