96-Well Polystyrene Microplate Lids — SBS/ANSI Format, Natural (Transparent), 15/Box (290-8019-01L)
These natural (transparent) polystyrene microplate lids are precision-molded to fit standard SBS/ANSI-footprint 96-well plates, delivering evaporation control, contamination protection, and stack stability across cell culture, ELISA, compound storage, and automated liquid-handling workflows. Supplied non-sterile in 15/Box (105/Case) format, the lids are also autoclave-compatible at 121°C for contamination-sensitive applications. The transparent PS construction provides unobstructed visual monitoring of plate contents and well-filling status without removing the lid.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 290-8019-01L |
| Well Format | 96-well, SBS/ANSI standard footprint |
| Material | Polystyrene (PS) |
| Color | Natural (transparent) |
| Sterility | Non-Sterile |
| Autoclave Compatibility | Yes — 121°C / 15 psi |
| Pack Size | 15/Box (7 Boxes/Case = 105 lids) |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA (California) |
Applications
- Cell culture incubation: Reduces evaporation and contamination during mammalian, insect, and bacterial cell culture in CO₂ incubators; the precision-molded flange engagement allows the passive gas exchange required for CO₂ equilibration while preventing accidental dislodgement during stacking.
- ELISA plate incubation: Covers plates during primary/secondary antibody incubation and substrate development steps; PS is fully compatible with standard aqueous ELISA reagents.
- Cell-based assays: Maintains a humid environment during extended cytotoxicity, proliferation, and reporter-gene assay incubations.
- Compound library and DMSO plate storage: Limits evaporation from small-molecule and drug-candidate compound plates between screening runs.
- Sample archiving: Protects biobank aliquot and sample storage plates from freezer frost and cross-contact contamination.
- Automated liquid handling: SBS-footprint geometry is compatible with standard robotic gripper arms in high-throughput screening workflows.
Compatibility
These lids are designed to fit any standard SBS/ANSI-footprint 96-well microplate, including plates from Thermo Fisher Scientific and Corning, as well as other major manufacturers whose plates conform to SBS dimensional standards. The friction-fit engagement is calibrated to seat securely during robotic plate transport and incubator stacking without requiring tools for removal. Because minor dimensional variations exist across plate brands and lot runs, it is advisable to confirm fit with a sample lid-plate pair before committing to bulk use in a new workflow.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline / PBS | Excellent |
| Standard ELISA reagents (aqueous) | Excellent |
| Cell culture media | Excellent |
| DMSO (low-concentration exposure) | Limited — short-term contact only; confirm suitability |
| Ethanol >70% | Not recommended |
| Acetone / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA (California), these Caplugs® Evergreen lids are produced from BPA-free, phthalate-free polystyrene and are autoclave-compatible at 121°C for sterility-critical applications. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking inventory in the USA, with same-business-day shipping available for standard orders and case-quantity pricing for high-throughput screening programs and institutional procurement budgets.
Frequently Asked Questions
Can these lids be autoclaved for sterile cell culture use?
Yes — they are autoclave-compatible at 121°C / 15 psi, which allows you to sterilize a supply for contamination-sensitive mammalian cell culture work even though they ship non-sterile.
Will these lids fit plates from Thermo Fisher Scientific and Corning?
Yes — the lid is dimensioned for the standard SBS/ANSI 96-well microplate footprint used by Thermo Fisher Scientific, Corning, and other major manufacturers. Because minor dimensional tolerances vary by brand and lot, confirm fit with a sample pair before bulk adoption in a new workflow.
Do the lids allow gas exchange for CO₂-incubated cell culture?
Yes — the friction-fit geometry is designed to be tight enough to prevent accidental dislodgement during stacking and robotic handling, while loose enough to allow the passive gas exchange needed for CO₂ equilibration in mammalian cell culture.
How many lids come in a case, and what is the reorder unit?
Each box contains 15 lids; a full case contains 7 boxes (105 lids total). You can reorder by the box or by the case depending on your consumption rate and storage capacity.