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Flask Closures

Each with its own specific application and fit, a variety of closures are available for use with flasks. Most common flask closures include screw caps and snap caps. Flask closures are typically manufactured from autoclavable plastics such as polyethylene or polypropylene. A wide range of flask closure types are available to accommodate a broad range of laboratory applications and flask varieties, including closures that are sterile or non-sterile, disposable or reusable, and vented or unvented. Vented flask closures commonly include a 0.2 µm filter membrane to prevent contamination of flask contents. For applications that require a tight seal, screw caps with plug seals are available.

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1

Corning™ Sterile Disposable Spinner Flask Vent Cap
BIOPHARMA GREENER_CHOICE

Designed to fit Corning 500mL, 1L and 3L disposable spinner flasks.

2

PYREX™ Polypropylene Caps for Erlenmeyer Flasks
BIOPHARMA GREENER_CHOICE

As supplied with Pyrex™ Brand Media/Solution bottles. Choose orange caps for temperatures to 140°C (284°F), red caps for temperatures to 180°C (356°F).

Disposable Single-use
Product Type Cap
Temperature Range (English) 284°F
Closure Color Orange
Temperature Range (Metric) 140°C
Sterility Sterile
Closure Material Polypropylene
3

Corning™ PYREX™ GL45 Screw Cap with Plug Seal

Nonsterile, reusable caps

Disposable Reusable
Product Type Cap
For Use With (Equipment) Graduated Erlenmeyer flasks and media bottles
Thread Size GL 45
Autoclavable Autoclavable
Sterility Non-sterile
4

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

Disposable Single-use
Product Type Cap, Filling
Closure Color Orange
Sterility Sterile
Closure Material HDPE
Diameter (Metric) Outer Neck 3.3 cm
5

Falcon™ Vented Screw Caps for Flasks, Sterile
GREENER_CHOICE

Designed for use with Falcon 25-, 75-, and 175cm2 flasks

Includes 0.2μm Membrane vent
Product Type Cap, Vented
Color Blue
Closure Type Screw Cap
Sterility Sterile
Closure Material Polyethylene
6

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

7

Corning™ Direct Overhead Drive 120mm Center Cap Assembly

For use with Corning Reusable spinner flasks

Disposable Reusable
Product Type Center Cap Assembly
No. per Case 1/Cs.
No. per Pack 1/Pk.
Sterility Non-sterile
8

Corning™ PYREX™ Polypropylene Flask Closures

Designed for culture tubes and flasks with long rimless necks

Disposable Reusable
Product Type Cap, Flask
For Use With (Equipment) Culture tubes and flasks with long ri mLess necks
No. per Case 100/Cs.
No. per Pack 50/Pk.
Autoclavable Autoclavable
Sterility Non-sterile
Closure Material Polypropylene
9

Corning™ 33mm Caps
BIOPHARMA GREENER_CHOICE

Solid or vented

10

Corning™ Solid Cap
BIOPHARMA

33 mm threaded cap

11

Corning™ Reusable Gas Venting Cap for Vertical Sidearm Flasks

Used to provide gases into larger spinner flasks with vertical sidearms during cell culture

12

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

13

Corning™ Reusable Gas Venting Cap With PTFE Filter For Vertical Sidearm Flasks

Can be used with larger Spinner Flasks with vertical sidearms to enhance productivity of cell culture

14

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

15

Thermo Scientific™ Nalgene™ Vented HDPE Closures for Sterile Single Use Erlenmeyer Flasks

Ensure a sterile gas exchange for shaker and suspension cell culture by using Thermo Scientific™ Nalgene™ Vented HDPE Closures for Sterile Single Use Erlenmeyer Flasks.

Color Blue
No. per Case 12
Material HDPE
No. per Pack 1
Closure Type Vented
Sterility Sterile