Graduated сylindrical funnels

Graduated Cylindrical Funnels: Measure While You Transfer

When you're tired of juggling a Measured cylinder in one hand and a funnel in the other, graduated cylindrical funnels solve that workflow problem. We've all been there—trying to transfer a specific volume while keeping track of measurements, inevitably making a mess or losing accuracy. These specialized pieces combine volume measurement with controlled liquid transfer, cutting your steps in half during routine prep work.

Precision Volume Transfer with Graduated Cylindrical Funnels

Built from borosilicate 3.3 glass, these funnels handle the same thermal shock resistance you'd expect from quality Glass apparatus—up to 500°C temperature differentials. The cylindrical body isn't just for show; it gives you better accuracy than traditional Round funnels because the uniform diameter means consistent graduation spacing. You can actually trust the markings when you're transferring solvents or preparing extraction solutions, with typical accuracy within ±1% of stated volume.

Calibration Markings for Accurate Liquid Dispensing

• Permanent graduations that won't fade after repeated exposure to organic solvents or cleaning solutions
• Available in capacities from 50ml to 2000ml, matching standard Measuring cylinders sizing
• Clear markings visible even with colored or turbid liquids
• Ground glass stoppers and PTFE stopcocks for controlled, drip-free dispensing

Unlike basic Round funnels where you're guessing volumes, you get real-time feedback during transfer. Particularly useful when you need to add reagents in stages or monitor phase separation volumes during extraction work.

Chemical-Resistant Glass Construction Standards

The borosilicate composition handles everything from concentrated acids to aggressive organic solvents—similar durability to what you'd use in a Soxlet extraction apparatus. PTFE stopcock valves provide chemical compatibility across the board, unlike older rubber-sealed designs that degrade. Each unit meets ISO and ASTM standards for laboratory glassware, meaning consistent wall thickness and reliable volume accuracy batch to batch.

Applications in Quantitative Laboratory Work

Perfect for liquid-liquid extractions where you need to track both phases accurately. Environmental labs use these for solvent extractions when sample volume documentation matters for compliance. In pharmaceutical QC, they're time-savers during separation procedures—no need to transfer between a separator and Measuring cylinders for final volume checks. Educational settings benefit too; students learn proper technique while understanding volume relationships in real-time. Compatible with standard plastic basis supports for stable bench placement during extended separation periods.