Cylinder, Measuring, With Stopper

Quick Answer: This graduated Measuring Cylinder has a ground-glass neck paired with a matching interchangeable stopper, giving a tight glass-on-glass seal for mixing, shaking or short-term storage of a sample without evaporation loss or contamination. It differs from LabEquip’s screw-cap and open-top measuring cylinders, which use different closure methods for different working needs.

Product Description

Like any measuring cylinder, this instrument is used to measure and dispense liquid volumes with a graduated scale printed along its length. What sets this version apart is its ground-glass stopper: the cylinder’s neck and the stopper are precision-ground to fit together, so once seated the stopper forms a secure seal. This makes the cylinder suitable not just for measuring, but for capping and gently inverting or shaking a sample to mix it, without needing a separate stoppered container.

What Makes This Instrument Distinct

LabEquip offers several measuring cylinder variants, and the closure type is one of the main differences between them. This stoppered version uses a ground-glass joint, which typically gives a tighter, more chemical-resistant seal than a screw cap and is well suited to mixing or brief sealed storage. Our screw-cap measuring cylinder instead uses a threaded cap, which is generally faster to open and close repeatedly and is a familiar everyday closure for routine dispensing work. Choosing between them depends on whether a tight mixing seal (this stoppered version) or quick repeated access (the screw-cap version) matters more for your application.

Specifications

Care & Maintenance

• Rinse thoroughly after use and dry before storage to prevent residue building up on the graduated scale or inside the ground-glass joint.
• Keep the stopper matched to its own cylinder; ground-glass joints are typically fitted as a pair and may not seal properly if swapped between cylinders.
• Avoid gripping the stopper tightly while twisting to remove it if it sticks – a light rocking motion is safer for both the glass and the joint’s seal.
• Store upright, ideally with the stopper lightly seated but not forced, and protected from impact.

Why Choose LabEquip

LabEquip supplies a full range of measuring cylinders and glassware in different closure types and materials, so labs can choose the exact combination of sealing, durability and handling that suits their workflow. Explore related instruments:

• Alcoholometer
• Measuring Instruments Category

Frequently Asked Questions

What is the ground-glass stopper for?
It forms a tight glass-on-glass seal at the cylinder’s neck, allowing the cylinder to be capped for mixing, shaking or short-term sealed storage without evaporation or contamination.

How is this different from the screw-cap measuring cylinder?
The ground-glass stopper generally gives a tighter, more chemical-resistant seal for mixing, while a screw cap is faster to open and close for routine repeated dispensing.

Can I swap the stopper with another cylinder?
Ground-glass stoppers are typically ground to fit their own cylinder as a matched pair, so swapping stoppers between cylinders may not give a proper seal.

What capacity and graduation interval does this cylinder have?
Exact capacity and graduation intervals vary by size; please confirm your requirement with our sales team.

Is this cylinder suitable for mixing samples?
Yes, the ground-glass stopper allows the cylinder to be sealed for gentle inversion or shaking to mix a sample.

How should I care for the ground-glass joint?
Keep it clean and dry, avoid forcing a stuck stopper, and store the stopper with its matching cylinder to preserve the seal.

Last Updated: September 2026