Pyrex Corning Glassware Lot 4985 Erlenmeyer Flasks 5340 Filter Flask 5900

Pyrex Corning Glassware Lot 4985 Erlenmeyer Flasks 5340 Filter Flask 5900 Fleakers

This lot contains seven pieces of Pyrex/Corning borosilicate laboratory glassware spanning three product lines: screw-top Erlenmeyer shaker flasks, a large-capacity filter flask with sidearm, and Fleakers. All pieces are clear borosilicate glass with printed graduation markings and are ready for immediate lab use.

Specifications & What's Included

• 4x Corning Pyrex No. 4985 — 1000ml Erlenmeyer Flask with phenolic screw cap
• 1x Corning Pyrex No. 5340 — 4000ml Filter Flask with sidearm tubulation
• 2x Corning No. 5900 — 500ml Fleaker (combined flask/beaker form factor)
• Total quantity: 7 pieces
• Material: Borosilicate glass (Pyrex)
• 4985 closure: phenolic screw cap (caps included)
• 5340 feature: sidearm tubulation port for vacuum filtration
• 5900 form: wide-mouth cylindrical Fleaker with flared lip, open top
• Graduation markings printed on all pieces

Applications

The Corning 4985 Erlenmeyer flasks with phenolic screw caps are a standard workhorse in microbiology, cell culture, and fermentation labs — the screw-top design makes them especially suited for use on orbital shakers where a tight seal prevents contamination and spillage during agitation. They are also widely used for media preparation, buffer mixing, and liquid storage. The 5340 4000ml filter flask is a heavy-duty Büchner filtration vessel; its sidearm connects to a vacuum pump or aspirator, drawing filtrate through a Büchner or fritted-glass funnel seated in the neck, and is used throughout chemistry and biology labs for vacuum filtration of precipitates, cell harvests, and sterile-filtration setups. The Corning Fleaker is a distinctive hybrid form — combining the cylindrical sides of a beaker with the narrowed neck of a flask — designed to reduce evaporation and splashing while still allowing easy stirring and pouring; it is used in general mixing, reagent preparation, and culture work. Pyrex borosilicate glass is the material of choice across these applications for its thermal shock resistance, chemical inertness, and autoclavability.