24-Well Microplate Lids — Polystyrene, Natural/Transparent, Autoclavable, 15/Box (290-8125-01L)
These 24-well polystyrene microplate lids are designed to fit standard SBS/ANSI-footprint 24-well plates, delivering evaporation control, contamination protection, and gas-exchange management during cell culture incubation, virus propagation, organoid culture, and sample archiving workflows. Supplied non-sterile in 15/Box (105/Case) format, part number 290-8125-01L is autoclave-compatible at 121°C / 15 psi — enabling sterilization before use in contamination-sensitive primary cell culture and biosafety-level applications where relying on non-sterile supply is not acceptable. The natural transparent PS construction allows visual assessment of well filling and cell confluency without removing the lid.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 290-8125-01L |
| Well Format | 24-Well SBS/ANSI Standard Footprint |
| Material | Polystyrene (PS) |
| Color | Natural (Transparent) |
| Sterility | Non-Sterile |
| Autoclave Compatibility | Compatible — 121°C / 15 psi |
| Verified Plate Compatibility | Caplugs® Evergreen 290-8124-01F 24-well flat-bottom plate |
| Pack Size | 15/Box (105/Case) |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA |
Applications
- Cell culture incubation — reduces contamination risk during extended adherent and suspension culture in CO₂ incubators
- Virus propagation — covers CPE assay plates during viral replication to prevent cross-contamination between wells
- Organoid culture — protects 3D organoids in Matrigel or basement membrane extract from desiccation during multi-day incubation
- Drug treatment incubation — maintains sterile conditions over compound-treated cell plates during treatment periods
- Evaporation control — reduces medium evaporation from edge wells in long-duration covered incubations
- Sample storage and transport — protects well contents from contamination and physical damage between experimental sessions
Compatibility
These lids are engineered to fit the standard SBS/ANSI microplate footprint used by 24-well plates across the major labware platforms, including Thermo Fisher and Corning formats. The precision friction-fit geometry seats securely against standard 24-well plate flanges — stable enough to prevent accidental dislodgement during incubator stacking and plate transport while still permitting the CO₂/O₂ gas exchange required for mammalian cell culture atmosphere equilibration. Compatibility with Caplugs® Evergreen 290-8124-01F 24-well flat-bottom plates has been directly verified. As lid-to-plate tolerances can vary across manufacturers, confirming fit with your specific plate brand before committing to high-volume procurement is always recommended.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous cell culture media / buffers | Excellent |
| Saline and physiological solutions | Excellent |
| Dilute acids and bases | Good — short-term contact |
| Ethanol >70% | Not recommended |
| Acetone | Not recommended |
| Aromatic / chlorinated solvents | Not recommended |
| Autoclave (121°C / 15 psi) | Compatible |
Quality & Procurement
Made in USA, Caplugs® Evergreen microplate lids are manufactured from BPA-free, phthalate-free polystyrene resin under ISO 9001 quality management. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with case-quantity pricing available to support high-plate-count cell culture programs, institutional purchasing agreements, and grant-funded laboratory budgets.
Frequently Asked Questions
Can these lids be autoclaved before use in sterile cell culture?
Yes — the polystyrene construction is autoclave-compatible at 121°C / 15 psi, making it appropriate to sterilize the lids before use in primary cell culture, virus propagation, and other contamination-sensitive workflows where a non-sterile supply is unacceptable.
Will these lids fit plates from Thermo Fisher, Corning, or other major manufacturers?
The lids are designed for the standard SBS/ANSI 24-well microplate footprint used across the industry, including Thermo Fisher and Corning platforms. Fit with the Caplugs® Evergreen 290-8124-01F flat-bottom plate has been directly verified. Because lid-to-flange tolerances vary by manufacturer, confirming physical fit with your specific plate brand before large orders is recommended.
Do the lids allow gas exchange during CO₂ incubation?
Yes — the friction-fit design provides a secure seal against accidental dislodgement while still permitting the passive CO₂/O₂ exchange needed to maintain atmosphere equilibration for mammalian cell culture in a CO₂ incubator.
Are these lids available in case quantities for high-throughput labs?
Yes — in addition to the 15/Box format, these lids are available as a 105/Case configuration, providing per-lid economics suited to programs that allocate a dedicated lid to each plate for the full duration of multi-day experiments.