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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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Promotions Available

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
2

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

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.

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

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

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
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.

EDGE
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
Promotions Available

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.
7

DWK Life Sciences KIMBLE™ KONTES™ Filtration Flask With Inner Joint 40/35, for 90mm Glass Assemblies

KIMBLE™ KONTES™ Filtration Flask With Inner Joint 40/35, for 90mm Glass Assemblies is manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements. Designed for use with Ultra-Ware 90mm all-glass microfiltration assemblies.

Standard Taper Joint 40/35
Product Type Flask
For Use With (Equipment) Ultra-Ware 90 mm all-glass Microfiltration Assembly
Material Borosilicate Glass
8

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

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
9

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
10

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
11

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

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™ KONTES™ ULTRA-WARE™ Heavy-Wall Filter Flasks

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
13

Eisco™ Polypropylene Filtering Flasks

Buchner filtering flask made of high quality, chemical resistant polypropylene with a conical shape to prevent spills

Disposable Reusable
Neck Style Beaded Rim
Shape Conical
Mouth Style Narrow
Product Type Filtering Flask
Graduated No
Bottom Shape Flat
Material Polypropylene
Autoclavable Autoclavable
Sterility Non-sterile
14

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
15

DWK Life Sciences KIMBLE™ KIMAX™ Brand Filtering Flasks

KIMBLE™ KIMAX™ Brand Filtering Flasks are heavy-walled borosilicate glass vessels designed for maximum strength and durability. Necks are tooled for uniform stopper fit with a thick flat flange, and a white ceramic enamel scale indicates approximate volume.

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