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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

Fisherbrand™ Reusable Heavy-Wall Filter Flasks

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

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

Heavy walled with graduated scale, side tubulation, tooled neck

EDGE
Material Borosilicate Glass
Certifications/Compliance ASTM E1406, Type II, Class I
3
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Thermo Scientific™ Nalgene™ Polypropylene Vacuum Flask
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
4

Corning™ PYREX™ Filtering Flasks with Sidearm Tubulation
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
5

Fisherbrand™ Vacuum Filter Holders, Filtration Flasks

For use with Fisherbrand Vacuum Filter Holders

Product Type Filtration Flask
For Use With (Equipment) Vacuum Filter Holder
6

DWK Life Sciences Kimble™ Kontes™ Heavy Wall Filtering Flask

Provides mechanical strength under vacuum application

Diameter (Metric) Inner Tubing 0.93 cm
Material Borosilicate Glass
7

Corning™ PYREXPLUS™ Coated Heavy Wall Filtering Flasks with Sidearm Tubulation
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.
8

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

Detachable plastic side arm secured by neoprene grommet

Includes Detachable side arm
Material Borosilicate Glass
Autoclavable Autoclavable
9

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

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

Material Borosilicate Glass
10

DWK Life Sciences Kimble™ Kontes™ Filtration Assemblies: Flasks With Side Arm, No. 2 Hose connection

Borosilicate glass flask with side arm, No. 2 hose connection.

Includes No. 2 Hose Connection
Quantity 1/Cs.
Material Borosilicate Glass
11

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

Heavy-wall borosilicate glass provides mechanical strength for vacuum filtration

Material Borosilicate Glass
12

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

Recommended for general filtration

For Use With (Equipment) 90 mm filtration assembly
Material Borosilicate Glass
For Use With (Application) Analysis of particulate or microbiological contamination
13

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

Sidearm tubulations and graduated to show approximate capacity

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
14

Corning™ PYREX™ Heavy Wall Filtering Flasks with Replaceable Tubulation

Replaceable plastic side arm secured by neoprene grommet

Disposable Reusable
Includes Plastic tubulation
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Heavy duty rim
Mouth Style Narrow
Material Borosilicate Glass
No. per Pack 1/Pk.
Sterility Non-sterile
15

DWK Life Sciences Kimble™ KIMAX™ Brand Filtering Flasks

Designed to afford maximum strength

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