Best Glass Lab Funnels in 2026

Can filter chemicals that cannot be filtered by filter paper or diaphragm; can be used with filter erlenmeyer flask, filter adapter cones and others; ideal for chemical analysis, petroleum industry, pharmaceutical industry and so on

G3 15~40 μm Nominal Max. pore size; compatible with StonyLab Qualitative/Quantitive Filter Paper Circles in 46 mm diameter

Special Notice: not for filtering hydrofluoric acid, hot concentrated phosphoric acid, concentrated alkaline solution, etc.; please clean immediately after use; keep it clean and dry when stored

Diameter (mm) 50

Material Neutral Glass

Stem Length (mm)50

3 Different Sizes Funnels with 1 Strainer: The 3 pieces stainless stell funnel set includes diameter of 4.3"/11cm, 5.1"/13cm, 5.9"/15cm according to your different needs. Includes a removable strainer to help prevent stem clogging.

High quality: Food grade stainless steel funnel, made of high quality stainless steel, safe and durable, resistant to fracture, bending, scratch and rust. You can also stack the three funnels to save storage space.

Easy to use: Each funnel has a very narrow stem, perfect for holding vials and containers, while preventing oil spills on kitchen counters. The most suitable for milk, syrup, beer, herbal medicine, old oil, detergent and other liquid accurate, fast transport and filling; And can be used to filter flour, spices, chewing cocoa, ground cocoa, coffee grates and other particles; Widely used in most bottles, glasses, cans and other containers.

POWDER || Powder funnel (60º Angle) with 100mm diameter and plain stem

THICK, UNIFORM WALLS || Features thick, uniform walls that allow for increased durability, ease of use and continual flow of liquid

DURABLE & STURDY || Made of high quality Borosilicate 3.3 glass that is built to last and withstand multiple uses - Glass is the material of choice for laboratory applications due to its inertness

Diameter (mm) 75

Material: Heavy Wall, Borosilicate glass

Stem Length: 75mm

Made of borosilicate glass

Diameter: 100mm

Stem Length: 100mm

500 ml Separatory funnel

500 ml glass separatory funnel for separating liquids with different densities

Made of high quality glass

9 different diameters cones funnel,suitable for different sizes of experimental apparatus.

buchner funnel adapter Used for filtration assemblies, with a Buchner funnel and a Buchner flask for filtration.

Buchner Funnel Flask Adapter Set made of vulcanized rubber,good elasticity,smooth surface and durable.

Top Outside Diameter: 100mm

24/40 Joint

Short Stem Funnel is made of borosilicate glass

Can filter chemicals that cannot be filtered by filter paper or diaphragm; can be used with filter erlenmeyer flask, filter adapter cones and others; ideal for chemical analysis, petroleum industry, pharmaceutical industry and so on

G1 80~120 μm Nominal Max. pore size; compatible with StonyLab Qualitative/Quantitive Filter Paper Circles in 94 mm diameter

Special Notice: not for filtering hydrofluoric acid, hot concentrated phosphoric acid, concentrated alkaline solution, etc.; please clean immediately after use; keep it clean and dry when stored

Material - Separating Funnel is made of high quality glass, clear and easy to wash.

Capacity - This separating funnel is 500ml with Standard taper clamp for joints 24/29.

Design - Conical design ensures efficient separation.

10000 mL Separatory funnel

10000mL glass separatory funnel for separating liquids with different densities

Made of high quality glass

PERFECT FOR LAB: Made of Borosilicate Glass, the Glass Funnels have High chemical durability and low thermal expansion, which can withstand the temperature under 800 °C (~1500 °F)

HEAVY DUTY: Reusable, environmental friendly, easy to clean, high temperature resistance, for laboratory, kitchen, science experiment, liquid

4 DIFFERENT SIZES: Our Glass Funnels come in 4 different sizes: 100 mm (170mm Length), 75 mm (130 mm Length), 50 mm (90 mm Length) & 40 mm (70 mm Length) Diameter

Be Made From G3.3 Borosilicate Glass

Annealing Point ------560℃

Linear Coefficient of Expansion------ 32×10-7/℃

Package contains: 1 pack 40mm short stem glass funnel.

Material: this funnel is made of 3.3 Borosilicate glass, clear glass, which has high heat resistance, acid and alkali resistance and good stability. It can be sterilized at high temperature. Food grade glass.

Size (Diameter x Height): 1.57in(40mm) x 2.95in(75mm). Height of stem: 1.57in(40mm).

Package include:OESS Filter Adapter Buchner Funnel Flask Cones Tapered Collar Blue Color 6pcs Set

The tapered filter adapter cones set are made of high quality rubber,used for filtration assemblies,together with a buchner funnel and a buchner flask for filtration.

They are used for filter funnels or Buchner funnel, which can be used singly or nested with adjacent sizes, reduces the risks associated with insertion and removal of glass stems through these rubber stoppers.

Our filter adapter cones set come with 9 different diameters and flexible use for various sizes of experimental filtration apparatus

Made of durable vulcanized rubber with good elasticity, smooth surface, and wear-resisting

It can be used as a single assembly or used for interlinking apparatus; reduce the damaged risks for glass stems when inserting or removing them through the rubber filter adapter cone

SEPARATE LIQUIDS WITH PRECISION: Purer extractions lead to more accurate work. Precisely separate compounds using the glass separator funnel and the leak-proof PTFE stopcock. The separation flask is designed for solvent/liquid-liquid extraction and is an essential tool in any lab. We recommend you run an extraction at least 2-3 times for the best results (distillation may be needed to remove impurities).

CONSTRUCTED TO LAB AND INDUSTRIAL STANDARDS: The American Fristaden Lab Separatory Funnel can handle tough, corrosive materials and high and low temperatures without breaking. The separating funnel is made with lab-quality borosilicate beaker 3.3 glass, which can handle much more stress than standard glass. The seperatory flask also features a corrosion resistant PTFE stop cock.

PACKED SO IT WON’T BREAK: Our glass conical separatory funnel, encased in sturdy foam packaging, will safely make the journey to your door.

DESIGN---- This powder funnel features 60°side angle and a standard taper inner joint to ensure tight attachment to other lab glassware with standard taper joints.With heavy walls for greater durability when pouring powders or liquids into the flasks or separatory funnels with standard ground taper joint.

WIDELY USED----This powder funnel is used for adding powder or liquid to lab glass containers with standard taper joints.When pouring large particles into reaction flasks,powder funnels provide a clean and convenient method.

DIMENSIONS-----The top outer diameter of the opening is 100mm,the lower joint is 24/40.

Package contains: 1 pack 50mm short stem glass funnel.

Material: this funnel is made of 3.3 Borosilicate glass, clear glass, which has high heat resistance, acid and alkali resistance and good stability. It can be sterilized at high temperature. Laboratory grade glassware.

Size (Diameter x Height): 1.97in(50mm) x 3.54in(90mm). Height of stem: 1.97in(50mm).

Pressure Equalizing Addition Funnel is commonly used in general closed system experiments and experiments that require dripping solutions; it is mainly connected with reaction vessel to drop solution, which can isolate the air, prevent solvent from volatilizing, and speed up experiment process

24/40 joint top and bottom

Capacity: 50ml

2000mL borosilicate glass separatory funnel

16 inches long, 6 inch diameter

Fitted with a 29/32 interchangeable plastic stopper and PTFE stopcock

Borosilicate glass

Diameter: 100mm

Stem Length: 100mm

StonyLab short stem powder funnel

Top diameter: 100 mm

Stem diameter: 22 mm

G3 15~40 μm Nominal Max; Pore Size

24/40 Joint on the top and bottom

Used in various chemical experiments for separating solids such as crystals or precipitates from large amounts of liquids; connect the bottom joint to Erlenmeyer flask or filtering flask, working with pump

Made of high quality, Borosilicate glass

Cylindrical Dropping Funnel, made of high quality borosilicate glass

Open top with PTFE Key Stopcock

Set of 9 different size neoprene adapter cones designed to fit Buchner and fritted glass funnels

Made of Neoprene: These adapter cones are designed to fit around the stem of Buchner funnels, porcelain filters (minus headpieces), and fritted glass funnels. Extremely useful in the reverse flow cleaning of filter crucibles.

Widely Used:Perfect for supporting funnels, Gooch crucibles, filter tubes and other apparatus that are routinely used in filtration assemblies.

FLUTED LAB FUNNEL: This short stem borosilicate glass funnel is professional laboratory equipment, but is also a suitable chemistry funnel for schools and home science experiments.

FASTER FILTERING: The glass funnels are fabricated from blanks formed to a 60° angle, and the lab glassware has depressed inside flutings to further decrease filtering time.

SAFE & DURABLE: Offering superior heat and chemical resistance, the laboratory funnel can accommodate harsh materials, and the glass funnel has a strong beaded edge to prevent chips and cracks.

Pressure Equalizing Addition Funnel is commonly used in general closed system experiments and experiments that require dripping solutions; it is mainly connected with reaction vessel to drop solution, which can isolate the air, prevent solvent from volatilizing, and speed up experiment process

Borosilicate glass; capacity: 500 ml with graduation

24/40 joint top and bottom

[SIZE]: 24/40 Joint; 4-5.5 Micron; Diameter of the glass filter: 100mm. 1/2" Barb.

[MATERIAL]: Made of high borosilicate glass.

[CAPACITY]: 600ml.