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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 275 results
1

Fisherbrand™ Reusable Heavy-Wall Filter Flasks
SDP

With heavier walls than standard Erlenmeyer flasks

EDGE
Graduated Yes
Temperature Range (English) 840°F max.
Material Borosilicate Glass
Certifications/Compliance ASTM E 1406, Type II, Class I
2

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
3

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

Heavy walled with graduated scale, side tubulation, tooled neck

EDGE
Material Borosilicate Glass
Certifications/Compliance ASTM E1406, 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

EDGE
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

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
6
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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.

EDGE
No. per Case 1
Material Polypropylene
No. per Pack 1
Autoclavable Autoclavable
7

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

Allow safe attachment of 0.25 in. I.D. (6mm) tubing

Material Borosilicate Glass
8

DWK Life Sciences DURAN™ Bottle Shape Filtering Flasks
SDP

With KECK assembly set

Includes KECK assembly set
9

DWK Life Sciences Kimble™ KIMAX™ Brand Filtering Flasks
SDP

Designed to afford maximum strength

Material Borosilicate Glass
Certifications/Compliance ASTM, E1406, Type I
10

DWK Life Sciences Kimble™ Kontes™ ULTRA-WARE™ Heavy-Wall Filter Flasks
GSA_VA SDP

Heavy-wall borosilicate glass provides mechanical strength for vacuum filtration

Material Borosilicate Glass
11

DWK Life Sciences Kimble™ KIMAX™ Flasks with Detachable Side Arm
SDP

Detachable plastic side arm secured by neoprene grommet

Includes Detachable side arm
Material Borosilicate Glass
Autoclavable Autoclavable
12

Bel-Art™ Filtering Flask, Side Arm

Polypropylene flask has side-arm at 45° downward angle to prevent tipping.

13

Synthware™ Filtering Flasks with Outer Joint
GREENER_CHOICE SDP

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 Kimble™ Kontes™ Heavy Wall Filtering Flask
SDP

Provides mechanical strength under vacuum application

Diameter (Metric) Inner Tubing 0.93 cm
Material Borosilicate Glass
15

Synthware™ Filtration Apparatus - Complete Assembly, 47 mm
GREENER_CHOICE SDP

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