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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 25 results
1

Fisherbrand™ Reusable Heavy-Wall Filter Flasks

With heavier walls than standard Erlenmeyer flasks

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
GREENER_CHOICE

Tubulations for easy connections to filter pumps

Disposable Reusable
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Heavy duty rim
Mouth Style Narrow
Material Borosilicate Glass
Sterility Non-sterile
3

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.
4

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
5

Eisco™ Conical Filtering Flask with Integral Side Arm

The borosilicate glass conical filtering flask with integral side arm is ideal for storage, mixing, and transferring of various solutions. The flask is easy to use in any lab with its flat bottom, side arm, narrow neck, and beaded rim.

Disposable Reusable
Mouth Style Wide
Product Type Filtering Flasks
Surface Treatment Non-treated
Graduated Yes
Bottom Shape Flat
Material Borosilicate Glass (3.3)
Autoclavable Autoclavable
For Use With (Application) Filtering Liquids
Sterility Non-sterile
6

Corning™ PYREX™ Filtering Flask without Sidearm Tubulation
GREENER_CHOICE

Shaped to give maximum mechanical strength

Disposable Reusable
Neck Style Narrow Mouth
Description Style: Filtering; Top style: Heavy duty rim
Mouth Style Narrow
Material Borosilicate Glass
Sterility Non-sterile
7

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

Heavy walled with graduated scale, side tubulation, tooled neck

Material Borosilicate Glass
Certifications/Compliance ASTM E1406, Type II, Class I
8

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

Heavy-wall borosilicate glass provides mechanical strength for vacuum filtration

Material Borosilicate Glass
9

DWK Life Sciences Kimble™ KIMAX™ Brand Filtering Flasks

Designed to afford maximum strength

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

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
11
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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.

No. per Case 1
Material Polypropylene
No. per Pack 1
Autoclavable Autoclavable
12

Corning™ PYREX™ VISTA™ Micro Filter Flask with Sidearm Tubulation

Small flasks recommended for microchemical use

Disposable Reusable
Includes Tubulation
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

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
15

DWK Life Sciences Kimble™ Kontes™ Filtration Assemblies: Flasks With Inner Joint 40/35, for 90mm Glass Assemblies

DWK Life Sciences Kimble Kontes Filtration Assemblies: Flasks With Inner Joint 40/35, for 90mm Glass Assemblies, Borosilicate Glass, Description: Funnel for 47mm assemblies, For Use With: Ultra-Ware 90mm all-glass Microfiltration Assembly, Standard Taper Joint: 40/35

Standard Taper Joint 40/35
Product Type Flask
For Use With (Equipment) Ultra-Ware 90 mm all-glass Microfiltration Assembly
Material Borosilicate Glass