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Woulf Bottle (Clear Glass)
Standardized Interchangeable Joints: Features multiple precision-ground glass necks (typically 24/29 or 29/32) that facilitate airtight, hermetic connections for complex gas manifolds and vacuum lines, ensuring zero-leakage performance under negative pressure.
Heavy-Wall Vacuum Geometry: Engineered with reinforced glass thickness and a flat-base design to provide superior mechanical stability and structural resistance to implosion during high-vacuum analytical procedures or intensive gas scrubbing.
$6.82
Quick Answer: The Woulf Bottle (Clear Glass) is a multi-necked glass safety and gas-washing bottle made from clear soda-lime or borosilicate glass so the liquid level and clarity inside can be seen at a glance. It is used as a vacuum-line trap and for gas washing where visual monitoring of the liquid is helpful.
Description
This Clear Glass Woulf Bottle from LabEquip is made with two or three necks fitted with ground-glass joints, allowing separate tubes to be passed into the vessel at the same time. Being in clear glass, the bottle lets the operator see the liquid level, colour change, or any bubbling activity directly, which is useful in teaching demonstrations and routine gas-washing work where a visual check adds confidence to the procedure.
Like its amber or standard borosilicate counterpart, the clear glass version is commonly placed in-line on a vacuum filtration or distillation set-up as a safety trap, protecting the vacuum pump from any liquid that is inadvertently drawn back through the line. It is equally suited to bubbling a gas stream through a liquid reagent for washing or absorption.
The clear glass construction is chemically resistant to common laboratory reagents and offers good resistance to thermal shock. These bottles are supplied in a range of standard laboratory capacities and neck configurations — confirm the exact volume and configuration required for your set-up at the time of enquiry.
Specifications
| Product Type | Woulf Bottle, Clear Glass (multi-neck safety / gas-washing bottle) |
| Material | Clear laboratory glass |
| Neck Configuration | Two or three necks with interchangeable ground-glass joints |
| Capacity | Supplied in a range of standard laboratory capacities — confirm exact volume at enquiry |
| Typical Use | Vacuum safety trap, gas washing, and visual monitoring of liquid contents |
| Common Settings | Teaching laboratories, demonstration set-ups, chemistry practicals |
Applications
- Vacuum-line safety trap where visual confirmation of liquid capture is useful
- Gas washing and absorption demonstrations where students need to observe the liquid
- Teaching laboratory set-ups where clarity of the vessel aids explanation
- General multi-tube liquid handling with separate inlet and outlet paths
- Protecting vacuum pumps and lines from liquid carry-over
Care & Handling
- Check ground-glass joints for chips or cracks before each use, particularly when the bottle will be used under vacuum.
- Lightly lubricate ground joints used regularly under vacuum to help maintain an airtight seal.
- Clean with a suitable laboratory detergent and rinse thoroughly, taking care to clear residue from all necks.
- Avoid using glassware with visible star-cracks or chips under any vacuum or pressure application.
- Store upright in a dry cabinet, with neck openings protected from dust and accidental impact.
Why Choose LabEquip
LabEquip supplies clear glass Woulf bottles alongside a wide range of lab glassware and chemistry lab equipment for schools, colleges, and industrial laboratories. Our team can help you confirm the right neck configuration and capacity for your application. For bulk orders, institutional procurement, or technical questions about this product, please contact us and our team will assist promptly.
Frequently Asked Questions
What is the Clear Glass Woulf Bottle used for?
It is used as a safety trap on a vacuum line and for gas washing, where a gas stream is bubbled through a liquid reagent. The clear glass lets you see the liquid level and any activity inside the bottle.
How is the clear glass version different from a standard Woulf bottle?
The main difference is visibility: the clear glass construction allows you to observe the liquid inside directly, which is helpful for teaching demonstrations and for visually confirming liquid capture during vacuum work.
Can this bottle be used under vacuum?
Yes, provided the glassware is inspected beforehand and is free of chips, cracks, or star-fractures, it can be used as an in-line safety trap on a vacuum filtration or distillation set-up.
How many necks does the bottle have?
It is typically supplied with two or three necks fitted with ground-glass joints, allowing separate tubes for gas or liquid inlet and outlet to be used at the same time.
What capacity does the Clear Glass Woulf Bottle come in?
These bottles are supplied in a range of standard laboratory capacities and neck configurations. Please confirm the exact volume and number of necks you require when you enquire.
How should this bottle be cleaned and stored?
Clean it with a suitable laboratory detergent, rinse thoroughly, and dry before storage. Keep ground-glass joints lightly lubricated if used often, and store the bottle upright in a dry cabinet away from impact.
Last Updated: September 2026
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