{"product_id":"corning-431464u-culture-flask-75-cm2-vented-cap-non-treated","title":"Corning Culture Flask 75 cm2 Vented Cap Non Treated Case of 100 Flasks","description":"\u003ch3\u003eCorning 75 cm2 Cantilever Neck Culture Flasks, Vented Cap, Not Treated, Sterile (431464U) – Case of 100\u003c\/h3\u003e\n\u003cp\u003eThe Corning 75 cm2 Culture Flasks (431464U) are high-purity, optical-grade biological vessels designed for suspension cell culture, hybridoma propagation, and non-adherent cell line maintenance. Precision-molded from premium virgin polystyrene, these flasks feature an untreated hydrophobic interior surface that prevents unwanted cell adhesion, ensuring high viability and effortless harvesting of suspension cultures. Outfitted with a 0.2 micrometer hydrophobic membrane vented cap, the flasks enable continuous, sterile gas exchange while forming an impenetrable barrier against viral and bacterial contaminants. Supplied as a bulk case of 100 sterile flasks (packaged as 20 inner sleeves containing 5 flasks each), this consumable line delivers certified contamination-free performance for research, clinical, and industrial bioprocessing environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Performance \u0026amp; Structural Design\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNon-Treated Hydrophobic Surface: Formulated with a natural, unmodified polystyrene surface that minimizes cell attachment, making it ideal for embryoid body formation, hybridoma growth, and non-adherent cell lines.\u003c\/li\u003e\n\u003cli\u003e0.2 µm Hydrophobic Membrane Vented Cap: Integrates a breathable polytetrafluoroethylene (PTFE) membrane inside the cap to allow continuous, sterile air and carbon dioxide exchange while preventing liquid wetting out and microbial penetration.\u003c\/li\u003e\n\u003cli\u003eErgonomic Cantilever Neck Profile: Features an angled, wide-mouth neck design that provides unobstructed pipette and cell scraper access to every corner of the growth surface, reducing sample loss during harvesting.\u003c\/li\u003e\n\u003cli\u003eOptically Clear Crystal Polystyrene: Manufactured to strict distortion-free standards to enable clear, high-contrast microscopic monitoring of suspension cell density and media condition.\u003c\/li\u003e\n\u003cli\u003eAnti-Tip Stacking Rim: Molded with a raised perimeter rim on the top and bottom surfaces to ensure stable, non-slip stacking inside laboratory incubators.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCatalog Number \/ MPN: 431464U\u003c\/li\u003e\n\u003cli\u003ePrimary Manufacturer: Corning Incorporated\u003c\/li\u003e\n\u003cli\u003eGrowth Surface Area: 75 cm2\u003c\/li\u003e\n\u003cli\u003eFlask Geometry \u0026amp; Neck Style: Rectangular Body with Cantilever \/ Angled Neck\u003c\/li\u003e\n\u003cli\u003eCap Style Profile: Orange Vented Cap with 0.2 µm Membrane\u003c\/li\u003e\n\u003cli\u003eMaterial Composition: Optical-Grade Virgin Polystyrene (PS Body) | High-Density Polyethylene (HDPE Cap)\u003c\/li\u003e\n\u003cli\u003eSurface Treatment Status: Not Treated (Untreated Hydrophobic Surface)\u003c\/li\u003e\n\u003cli\u003eSterility Certification: Pre-Sterilized via Gamma Irradiation (SAL 10-6)\u003c\/li\u003e\n\u003cli\u003ePurity Profile: Certified non-pyrogenic, non-cytotoxic, and free of detectable RNase and DNase contamination\u003c\/li\u003e\n\u003cli\u003eRecommended Working Volume: 15 mL to 22.5 mL (Maximum Volumetric Capacity: 250 mL)\u003c\/li\u003e\n\u003cli\u003ePackaging Configuration: Case of 100 flasks (20 inner sterile sleeves x 5 flasks per sleeve)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Benefits \u0026amp; Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuspension Cell Culture Maintenance: Optimized for growing non-adherent mammalian cell lines, including lymphoblastoid cells, hybridomas, and hematopoietic stem cells.\u003c\/li\u003e\n\u003cli\u003eMonoclonal Antibody \u0026amp; Recombinant Protein Production: Serves as a reliable, scalable vessel for expanding suspension cells prior to seeding into larger bioreactors or spinner flasks.\u003c\/li\u003e\n\u003cli\u003eAseptic Gas Exchange in CO2 Incubators: The membrane cap maintains optimal pH balance without requiring users to loosen caps, reducing the risk of accidental cross-contamination.\u003c\/li\u003e\n\u003cli\u003eTraceable Cleanroom Packaging: Sub-packaged in small 5-flask sleeves to protect unused inventory from environmental dust when working inside biosafety cabinets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eAll product names, logos, and brands are property of their respective owners.\u003c\/small\u003e\u003c\/p\u003e","brand":"Corning","offers":[{"title":"Default Title","offer_id":50807526654204,"sku":"10870","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8463\/5132\/files\/IMG_4885_Shopify1024.jpg?v=1785514118","url":"https:\/\/lifesciencestrading.com\/zh\/products\/corning-431464u-culture-flask-75-cm2-vented-cap-non-treated","provider":"Life Sciences Trading","version":"1.0","type":"link"}