Description
Achieve accurate, controlled dropwise addition of reagents under closed or inert conditions with our Glass Constant Pressure Graduated Addition Funnel. Crafted from high-quality borosilicate 3.3 glass, this funnel features a ground glass stopcock and a 14/20 standard taper joint for secure, leak-resistant connections. The pressure-equalizing side arm equalizes pressure between the funnel and the reaction vessel, ensuring smooth, consistent flow without the need for repeated venting—ideal for air-sensitive and moisture-sensitive reactions. The clear glass body is graduated with easy-to-read volume markings, allowing precise monitoring of liquid addition.
Available in 10ml, 25ml, 60ml and 125ml capacities, this addition funnel is an excellent choice for organic synthesis, pharmaceutical research, and any laboratory procedure requiring controlled reagent delivery, especially where a glass stopcock is preferred over PTFE for compatibility or traditional setups.
Key Features & Benefits:
-
Constant Pressure (Equalizing) Design: The integral side arm balances pressure between the funnel and the reaction flask, enabling steady dropwise addition and preventing backpressure or vacuum issues.
-
Ground Glass Stopcock: Provides smooth, precise flow control. Chemically resistant and ideal for applications where PTFE may not be suitable. Interchangeable for easy replacement.
-
Graduated Body: Clear volume markings on the borosilicate glass allow for accurate monitoring of liquid dispensed and remaining.
-
14/20 Standard Taper Joint: Ensures a tight, leak-resistant fit with 14/20 compatible flasks, adapters, and stoppers.
-
Premium Borosilicate 3.3 Glass: Excellent thermal shock resistance and chemical durability for long service life.
-
Multiple Capacity Options: Choose from 10ml, 25ml, 60ml or 125ml to suit your specific reaction scale.
-
Autoclavable: Suitable for standard sterilization procedures.
