Multi-layer Cell Culture Flasks

<h2 dir="ltr"> What Are Multi-Layer Cell Culture Flasks?</h2>
 Multi-layer cell culture flasks are closed, TC-treated polystyrene vessels in which multiple horizontal growth chambers are stacked within a single T-175-equivalent footprint. The 3-layer format delivers 525 cm&sup2; of growth surface; the 5-layer format delivers 875 cm&sup2; &mdash; representing a 3&times; and 5&times; increase over a standard T-175 flask, respectively. They are used for adherent mammalian cell expansion workflows, including vaccine production, virus amplification, CHO-cell bioprocessing, and cell-based assay scale-up. Choose multi-layer flasks when you need &gt;T-175 yields without adding incubator shelves.
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<h2 dir="ltr">What you will find:</h2>
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3-Layer Cell Flasks &ndash; Increased surface area for mid-scale expansion.
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5-Layer Cell Flasks &ndash; Optimized for high-density, large-scale cell growth.
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Seal Caps &ndash; Provides a secure, liquid-tight closure for static cultures.
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Vent Caps &ndash; Features a 0.22&mu;m membrane for continuous sterile gas exchange.
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<h2 dir="ltr"> How to Choose Multi-Layer Cell Culture Flasks</h2>
 Number of Layers A 3-layer flask (525 cm&sup2;) handles moderate scale-up and is easier to prime with media; a 5-layer flask (875 cm&sup2;) maximises yield per incubator position but requires 125&ndash;200 mL of media for even distribution. Match the layer count to your target cell number per passage. Cap Type: Vent vs Plug-Seal Vent caps incorporate a 0.2 &micro;m hydrophobic PTFE membrane for passive CO₂/O₂ exchange &mdash; use when incubating in a 5% CO₂ environment. Plug-seal caps provide a hermetic closure for short-term transport or anaerobic culture. Surface Treatment Tissue culture&ndash;treated (TC-treated) surfaces are plasma-treated to a hydrophilic, negatively charged state that promotes adherent cell attachment; use untreated variants only for suspension cultures or specific coating experiments. Material &amp; Sterilisation Look for flasks made from 100% virgin, USP Class VI medical-grade polystyrene, sterilised by E-beam to SAL 10⁻⁶, and certified DNase/RNase-free and non-pyrogenic. Lot numbers printed on each flask support GMP traceability. Serological Pipette Access Flasks accepting 10 mL serological pipettes directly allow liquid aspiration and cell harvest without additional transfer steps &mdash; confirm neck design before ordering for high-throughput workflows. 
<h2 dir="ltr"> Specifications Context</h2>
 Both 3-layer and 5-layer formats share common material specs: 100% virgin polystyrene body, HDPE cap, and PTFE vent membrane (vent cap models). Sterilisation to SAL 10⁻⁶ via E-beam irradiation (ISO 11137) is standard. As of 2026, the Nest Scientific 3-layer (cat. 731302) and 5-layer (cat. 731001/731002) remain the most widely distributed mid-tier options. For GMP applications requiring cGMP compliance documentation, Falcon/Corning multi-flasks are the established reference; MBP's Nest Scientific line suits research and process development. 
Achieve superior cell growth with validated multi-layer systems. <a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Contact the experts at Molecular Biology Products Inc.</a> for a quote to optimize your laboratory&rsquo;s output and reliability

DataSheet

Multi-layer Cell Culture Flask Specifications

Multi-layer Cell Culture Flask

731001 by NEST Scientific — 5-layer multi-layer cell culture flask with 870 cm² TC-treated growth area. Vent cap, RNase/DNase-free, sterile, 1/pk. For large-scale adherent cell expansion and protein or viral vector production.