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Filtering Flasks

Filtering flasks are used in numerous general laboratory procedures for rapid filtration of liquids. Typical flask design includes a conical shape with a flat bottom, tapered neck, and a sidearm for use in vacuum filtration. Filtering flasks are most commonly manufactured from borosilicate glass with thick walls that can withstand pressure under vacuum. Depending on the application, the flasks can be manufactured from other materials, such as polystyrene. Filtering flasks are available in a variety of volumes and socket sizes. Graduated and ungraduated varieties are available. Filtering flasks are also known as vacuum flasks, Buchner flasks, suction flasks, Kitasato flasks, or side-arm flasks. The flasks are often used with other accessories, such as a Buchner funnel that is fitted through a rubber bung or a Buchner ring. The sidearm can be integral to the flask or detachable, with barb-like rings on the tip to allow for connection to vacuum tubing.
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1 – 15 of 196 results
1
Promotions Available

Corning™ PYREX™ Filtering Flasks with Sidearm Tubulation
GSA_VA GREENER_CHOICE

Tubulations for easy connections to filter pumps

EDGE
Disposable Reusable
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Heavy duty rim
Mouth Style Narrow
Material Borosilicate Glass
Sterility Non-sterile
2

Corning™ PYREX™ VISTA™ Heavy-Wall Filter Flasks with Sidearm Tubulation
GSA_VA GREENER_CHOICE

Sidearm tubulations and graduated to show approximate capacity

EDGE
Disposable Reusable
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Beaded rim
Mouth Style Narrow
Diameter (Metric) Outer Tubing 1 cm
No. per Case 12/Cs.
Material Borosilicate Glass
No. per Pack 6/Pk.
Sterility Non-sterile
3

Fisherbrand™ Reusable Heavy-Wall Filter Flasks

Fisherbrand™ Reusable Heavy-Wall Filter Flasks feature heavier walls than standard Erlenmeyer flasks and are designed to withstand vacuum to 29 in. of mercury. With side tubulation and a capacity scale, they are ideal for reliable vacuum filtration in the lab.

Graduated Yes
Temperature Range (English) 840°F max.
Material Borosilicate Glass
Certifications/Compliance ASTM E 1406, Type II, Class I
4

Corning™ PYREXPLUS™ Coated Heavy Wall Filtering Flasks with Sidearm Tubulation
GSA_VA GREENER_CHOICE

Pyrex™ borosilicate glass with PVC coating reduces chance of breakage

Disposable Reusable
Height (Metric) 35.6 cm
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Heavy duty rim
Mouth Style Narrow
Material Borosilicate Glass
Sterility Non-sterile
Surface Coating Pyrexplus
Height (English) 14.01 in.
5

DWK Life Sciences KIMBLE™ KIMAX™ Flasks with Quick-Release Hose Connector
GSA_VA SDP

KIMBLE™ KIMAX™ Flasks with Quick-Release Hose Connector allow safe attachment of 0.25 in. I.D. (6mm) tubing. Heavy-wall borosilicate glass filter flasks feature a quick-release connector for secure, stable tubing connections during vacuum filtration.

Material Borosilicate Glass
6

DWK Life Sciences KIMBLE™ KIMAX™ Filtering Flasks with Side Arm
GSA_VA SDP

KIMBLE™ KIMAX™ Filtering Flasks with Side Arm are heavy-walled borosilicate glass flasks with a graduated scale, side tubulation, and tooled neck, designed for reliable vacuum filtration across a wide range of laboratory capacities.

Material Borosilicate Glass
Certifications/Compliance ASTM E1406, Type II, Class I
7

DWK Life Sciences KIMBLE™ KONTES™ ULTRA-WARE™ Heavy-Wall Filter Flasks
GSA_VA SDP

KIMBLE™ KONTES™ ULTRA-WARE™ Heavy-Wall Filter Flasks feature heavy-wall borosilicate glass for mechanical strength during vacuum filtration, plus KimCote™ plastic safety coating for added protection against breakage.

Material Borosilicate Glass
8

DWK Life Sciences DURAN™ Bottle Shape Filtering Flasks with KECK Assembly Set
SDP

DURAN™ Bottle Shape Filtering Flasks with KECK Assembly Set are large-capacity borosilicate glass filtering flasks designed for demanding filtration applications. Each flask includes a removable plastic hose connection (PBT), short and long screws (PP), and VMQ and EPDM seals.

Includes KECK assembly set
9

Fisherbrand™ Vacuum Filter Holders Filtration Flasks

Fisherbrand™ Vacuum Filter Holders Filtration Flasks are heavy-walled Erlenmeyer-style glass flasks designed for vacuum filtration applications. Compatible with Fisherbrand™ Vacuum Filter Holders, these flasks provide the mechanical strength required for reliable vacuum filtration.

Product Type Filtration Flask
For Use With (Equipment) Vacuum Filter Holder
10
Promotions Available

Thermo Scientific™ Nalgene™ Polypropylene Vacuum Flask
GSA_VA GREENER_CHOICE

Replace glass flasks with this flask, molded in one piece for full vacuum service with angled tubulation to prevent tipping.

No. per Case 1
Material Polypropylene
No. per Pack 1
Autoclavable Autoclavable
11

DWK Life Sciences KIMBLE™ KONTES™ Filtration Assemblies: Flasks With Side Arm, No. 2 Hose Connection
SDP

KIMBLE™ KONTES™ Filtration Assemblies: Flasks With Side Arm, No. 2 Hose Connection are borosilicate glass filtration flasks with a #2 hose connection for 0.25 in. (6mm) ID tubing, conforming to USP Type I and ASTM E438, Type I, Class A requirements.

Includes No. 2 Hose Connection
Quantity 1/Cs.
Material Borosilicate Glass
12

DWK Life Sciences KIMBLE™ KIMAX™ Graduated Filtering Flask with Side Tubulation
SDP

The KIMBLE™ KIMAX™ Graduated Filtering Flask with Side Tubulation is designed for vacuum to 29° of mercury. Heavy-wall borosilicate glass construction with a capacity scale and side hose connection for 5/16 inch I.D. flexible tubing.

13

Synthware™ Filtering Flasks with Outer Joint
GREENER_CHOICE

Heavy wall design

Description Filtering flask with outer joint
Mouth Style Rimmed
Closure Size 24/40
Graduated No
Bottom Shape Flat
Class A
Material Borosilicate Glass (3.3)
Closure Type Glass Stopper
Autoclavable Autoclavable
Sterility Non-sterile
14

DWK Life Sciences WHEATON™ 1000mL Filter Flask with 40/35 Joint
SDP

WHEATON™ 1000mL Filter Flask with 40/35 Joint is designed for vacuum filtration applications. Erlenmeyer-style heavy-wall glass construction provides the mechanical strength required for filtration. Side arm accepts standard 0.25 in. (6mm) I.D. tubing via a #2 hose connection.

For Use With (Equipment) 90 mm filtration assembly
Material Borosilicate Glass
For Use With (Application) Analysis of particulate or microbiological contamination
15

Synthware™ Filtration Apparatus - Complete Assembly, 47 mm
GREENER_CHOICE

Filtration Apparatus for filtration of corrosive solutions, particulate removal from HPLC solvents and filtration of analysis with solid phase extraction disk.

Disposable Reusable
Diameter (Metric) Disc 47 mm
Mouth Style Beaded
Capacity (Metric) 1 L
Color Clear
Surface Treatment Non-treated
Graduated Yes
Bottom Shape Flat
Material Borosilicate Glass
Autoclavable Autoclavable
For Use With (Application) Organic Synthesis
Sterility Non-sterile