Filtering Flasks
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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DWK Life Sciences Kimble™ KIMAX™ Filtering Flasks with Side Arm
Heavy walled with graduated scale, side tubulation, tooled neck
Promotions are available
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PYREX™ VISTA™ Heavy-Wall Filter Flasks with Sidearm Tubulation
Sidearm tubulations and graduated to show approximate capacity
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PYREXPLUS™ Coated Heavy Wall Filtering Flasks with Sidearm Tubulation
Pyrex™ borosilicate glass with PVC coating reduces chance of breakage
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Thermo Scientific™ Nalgene™ Polypropylene Vacuum Flask
Replace glass flasks with this flask, molded in one piece for full vacuum service with angled tubulation to prevent tipping.
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DWK Life Sciences Kimble™ KIMAX™ Flasks with Quick-Release Hose Connector
Allow safe attachment of 0.25 in. I.D. (6mm) tubing
Promotions are available
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PYREX™ Heavy Wall Filtering Flasks with Replaceable Tubulation
Replaceable plastic side arm secured by neoprene grommet
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Bel-Art™ SP Scienceware™ Filtering Flasks with Side Arm
Polypropylene flask has side-arm at 45° downward angle to prevent tipping
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Synthware™ Filtering Flasks with Outer Joint
Heavy wall design
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PYREX™ VISTA™ Micro Filter Flask with Sidearm Tubulation
Small flasks recommended for microchemical use
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DWK Life Sciences DURAN™ Bottle Shape Filtering Flasks
With KECK assembly set
Promotions are available
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DWK Life Sciences Kimble™ Kontes™ ULTRA-WARE™ Heavy-Wall Filter Flasks
Heavy-wall borosilicate glass provides mechanical strength for vacuum filtration
Promotions are available
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PYREX™ Heavy Wall Filtering Flasks with Replaceable Tubulation
Replaceable plastic side arm secured by neoprene grommet