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

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

With fixed perforated plate

Glazed on inner and outer surface with exception of rim

100mm outer diameter, 92mm inner diameter

1000 ml Separatory funnel

1000 ml glass separatory funnel for separating liquids with different densities

Made of high quality glass

Made of borosilicate glass

Length: 50mm

Stem Length: 50mm

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

G2 40~80 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

60 mL Separatory funnel

60mL glass separatory funnel for separating liquids with different densities

Made of high quality glass

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

60 mL Separatory funnel

60 mL glass separatory funnel for separating liquids with different densities

Made of high quality glass

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

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

Borosilicate glass

Diameter: 100mm

Stem Length: 100mm

StonyLab short stem powder funnel

Top diameter: 100 mm

Stem diameter: 22 mm

Top Outside Diameter: 100mm

19/22 Joint

Short Stem Funnel is made of borosilicate glass

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

Valuable Bundle: Separatory Funnel and Lab Stand with Rod/4-Prong Burette Clamp/Retort Ring and 2 Boss Heads

Separatory Funnel: 500 ml glass separatory funnel for separating liquids with different densities

Lab Stand Set: includes a stand base (7.87 x 5.31 inches), a rod (22.44 inches), a 4-prong adjustable burette clamp with cork-coated grip (3.94 inches maximum open), a retort ring (3.15 inch O.D. and 2.56 inch I.D.), and 2 boss head clamp holders; securely support and hold a variety of types of labware in place

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 56 mm diameter

24/40 Joint on the top and bottom; made of high quality glass

StonyLab pressure equalizing funnel; Borosilicate glass laboratory glassware used to transfer liquids

Cylindrical style with PTFE stopcock allows transfer to be controlled; useful for adding reagents slowly

24/40 standard joint at top and bottom for better connection with other instruments

StonyLab constant pressure dropping funnel is mainly used for the drip addition of liquids in experiments to prevent liquid back-siphoning and reduce the influence of liquid on air pressure in the system

24/40 standard joint at top and bottom for better connection with other instruments

Cylindrical style with fully encapsulated vacuum valve