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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

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

Fisherbrand™ Vacuum Filter Holders, Filtration Flasks

For use with Fisherbrand Vacuum Filter Holders

Product Type Filtration Flask
For Use With (Equipment) Vacuum Filter Holder
3

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
4
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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
5

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

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
8

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
9

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
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 Kimble™ KIMAX™ Brand Filtering Flasks

Designed to afford maximum strength

Material Borosilicate Glass
Certifications/Compliance ASTM, E1406, Type I
13

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
14

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
15

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