The Laboratory Dropping Funnels category supports laboratories that need to separate liquids, solids and dissolved components by differences in volatility, solubility, particle size, density or affinity. The range spans routine bench requirements and more specialised applications where material choice, control and repeatability become especially important.
Correct glassware geometry, membrane selection, vacuum level and chemical compatibility directly affect recovery, purity and processing time. A well-matched setup balances chemical compatibility, temperature and vacuum conditions, pore size or retention, and connection size, helping the laboratory avoid unnecessary rework, difficult cleaning or premature replacement.
Most methods combine sample preparation with a selected separation mechanism, controlled transfer or heating, collection of the target fraction and cleaning between runs. Looking at the full sequence makes it easier to identify the correct accessories and consumables before the equipment is put into service in chemistry, food, environmental, pharmaceutical, industrial and teaching laboratories. As part of the Distillation, Separation and Filtration Equipment range, these products can be selected with the equipment and consumables used before and after this stage.
Our Laboratory Dropping Funnels Range
Our collection covers material are these funnels made from, these funnels for vacuum distillations, when is a pressure-equalizing dropping funnel necessary, and benefits of a ptfe stopcock, giving laboratories practical choices for routine work and more specialised applications.
Material are these funnels made from
All dropping funnels from Lenz and ISOLAB are manufactured from high-quality borosilicate glass, providing excellent thermal shock resistance and broad chemical compatibility. When comparing options, consider chemical compatibility, temperature and vacuum conditions, and pore size or retention. The correct choice should fit the sample, expected workload and any equipment already used in the method. Used correctly, this part of the range helps laboratories build a compatible separation train that protects recovery and reduces unnecessary transfers. The result is a setup that is easier to train, document and maintain.
These funnels for vacuum distillations
Provided you select a model with a pressure equalization tube and secure NS ground joints, these funnels are designed to operate safely under reduced pressure conditions. When comparing options, consider temperature and vacuum conditions, pore size or retention, and connection size. The correct choice should fit the sample, expected workload and any equipment already used in the method. Within the wider method, these products help laboratories build a compatible separation train that protects recovery and reduces unnecessary transfers. They should be reviewed together with associated consumables, accessories and cleaning requirements.
When is a pressure-equalizing dropping funnel necessary
Pressure equalization tubes, found on specialised Lenz-Laborglas models, allow the pressure above the liquid in the funnel to remain the same as the pressure in the reaction flask, enabling addition in closed systems. Key differences are usually found in pore size or retention, connection size, and separation principle. These details affect day-to-day usability as much as the main performance specification. This is especially valuable when teams need to build a compatible separation train that protects recovery and reduces unnecessary transfers. Consistent handling also reduces the risk of variation between batches or operators.
Benefits of a PTFE stopcock
PTFE stopcocks, like those on ISOLAB funnels, do not require joint grease, which eliminates a common source of sample contamination and prevents the stopcock from "freezing" or sticking. The most suitable format depends on connection size, separation principle, and sample volume. Laboratories should also confirm how the product will be prepared, used, cleaned or disposed of between runs. In practice, this supports efforts to build a compatible separation train that protects recovery and reduces unnecessary transfers. It also gives staff a clearer and more repeatable procedure when multiple users or shifts share the same equipment.
Featured Brands
DWK Life Sciences is known for laboratory glassware, bottles and precision handling products, BRAND is known for liquid-handling products, volumetric labware and supporting accessories, VITLAB is known for plastic labware, dispensing products and chemical-resistant handling solutions, and VACUUBRAND is known for chemistry vacuum pumps, controllers and vacuum-network components. Compare each brand by chemical compatibility, temperature and vacuum conditions, pore size or retention, and connection size, and check what is included with the product so the complete setup is clear before ordering.
Why Choose LabFriend for Laboratory Dropping Funnels
At LabFriend, we are committed to helping UK laboratories select laboratory dropping funnels around the actual method, not simply the most prominent specification. Our knowledgeable team can assist with chemical compatibility, temperature and vacuum conditions, pore size or retention, and connection size, and can help identify the accessories or consumables needed to make the setup workable from the first use. As a 100% online laboratory supplier, we provide competitive pricing, transparent lead times and a convenient way to compare connected products in one place.
Use the laboratory dropping funnels range to build a coordinated laboratory distillation, extraction, separation and filtration workflow, from the primary equipment through to the items needed for preparation, connection, cleaning and repeat use. Useful related areas include Laboratory Separating Funnels and Round-Bottom Flasks for Labs, which can help complete the surrounding workflow. Keeping these requirements together makes it easier to maintain stock, train users and plan future replacements without fragmenting purchasing across multiple suppliers. Add the required items to your cart and select Instant Quote.
Frequently Asked Questions
What material are these funnels made from?
All dropping funnels from Lenz and ISOLAB are manufactured from high-quality borosilicate glass, providing excellent thermal shock resistance and broad chemical compatibility. The final choice should reflect temperature and vacuum conditions, pore size or retention, and connection size, as these points influence day-to-day compatibility and repeatability.
Can I use these funnels for vacuum distillations?
Provided you select a model with a pressure equalization tube and secure NS ground joints, these funnels are designed to operate safely under reduced pressure conditions. For dropping funnels, also check temperature and vacuum conditions, pore size or retention, and connection size so the product fits the complete procedure.
When is a pressure-equalizing dropping funnel necessary?
Pressure equalization tubes, found on specialised Lenz-Laborglas models, allow the pressure above the liquid in the funnel to remain the same as the pressure in the reaction flask, enabling addition in closed systems. The final choice should reflect temperature and vacuum conditions, pore size or retention, and connection size, as these points influence day-to-day compatibility and repeatability.
What are the benefits of a PTFE stopcock?
PTFE stopcocks, like those on ISOLAB funnels, do not require joint grease, which eliminates a common source of sample contamination and prevents the stopcock from "freezing" or sticking. Laboratories should compare temperature and vacuum conditions, pore size or retention, and connection size and document the selected setup for consistent use.
Which specifications matter most when comparing dropping funnels?
Start with the application and sample, then compare temperature and vacuum conditions, pore size or retention, connection size, and separation principle. Check compatibility with existing equipment and confirm any accessories, consumables, calibration items or replacement parts required for routine use. The final choice should reflect temperature and vacuum conditions, pore size or retention, and connection size, as these points influence day-to-day compatibility and repeatability.
