Dropping Funnel

Dropping Funnel, cylindrical ungraduated with PTFE key stopcock and interchangeable stopper, BORO 3.3 glass – LabChoice Australia
This product has multiple variants. The options may be chosen on the product page Select optionsThis product has multiple variants. The options may be chosen on the product page
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Dropping Funnel, Cylindrical, Ungraduated, Interchangeable Stopper, PTFE Key Stopcock, Borosilicate Glass (BORO 3.3)

From $39.20 (Ex GST)

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Dropping funnels supplied by LabChoice Australia provide controlled, dropwise or continuous reagent addition for synthesis, titration and liquid handling workflows across teaching, analytical and industrial laboratory environments. Manufactured from high clarity BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A standards, these funnels deliver exceptional chemical resistance, thermal stability and structural durability. Their tapered design supports smooth reagent flow, while the high clarity glass allows accurate monitoring of liquid level and drop rate during sensitive reaction steps.

Each dropping funnel features a precision ground taper joint produced to ISO 383 and ASTM E676 standards, ensuring reliable compatibility with reaction flasks, condensers, stillheads and adapter systems. A PTFE or glass stopcock provides leak resistant control for exact reagent delivery, supporting both rapid transfer and fine control during moisture sensitive or exothermic reactions. Models with pressure equalising side arms enhance safety by allowing internal and external pressure to balance during reagent addition, reducing risk of bumping or backflow in closed systems.

Dropping funnels are widely used in organic synthesis, controlled reagent addition, halogenation workflows, oxidation and reduction reactions, esterification, hydrolysis procedures and general solution handling. They are also essential in teaching laboratories for demonstrating controlled reagent delivery techniques and reaction kinetics. The robust BORO 3.3 construction ensures resistance to acids, alkalis, solvents and temperature fluctuations encountered during heating, cooling and vacuum assisted setups.

All dropping funnels supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes dimensional accuracy checks, joint taper conformity testing, stopcock sealing assessment, wall thickness measurement, thermal shock testing and clarity evaluation. Each funnel is validated to ensure full compliance with ISO 3585 and ASTM E438 borosilicate performance requirements, and jointed components are verified to ISO 383 and ASTM E676 interchangeability standards. These rigorous measures ensure safe, precise and long lasting performance for laboratories requiring high accuracy reagent addition equipment.