{"product_id":"caplugs-290-8126-03l-24-well-microplate-lid-pp-natural","title":"8126–03 L Microplates, PP, Natural — 290-8126-03L | 15\/Box | Caplugs® Evergreen","description":"\u003ch2\u003e24-Well Microplate Lids, Polypropylene (PP), Natural — 290-8126-03L | 15\/Box (105\/Case)\u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eQuick Reference — 290-8126-03L\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWells\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e24-well SBS format\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNatural (transparent)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDMSO Compat.\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e✓ Broader than PS — suitable for DMSO ≤30%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAutoclave\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e✓ Compatible (121°C \/ 15 psi) — better than PS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e15\/Box (105\/Case)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e$77.67 \/ Box ($0.7398 \/ lid)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTechnical Narrative\u003c\/h2\u003e \u003cp\u003eThe Caplugs® Evergreen is a 24-well Polypropylene (PP) microplate lid — the chemical-resistant upgrade from the PS variant (290-8125-01L) for cell culture and assay programs requiring broader solvent compatibility or repeated autoclave sterilization. PP provides significantly better DMSO tolerance than PS — suitable for compound-treated culture plates at DMSO concentrations up to approximately 30%, where PS lids can stress-crack or leach plasticizers under sustained solvent exposure. Natural transparent PP allows visual monitoring of cell confluency and well filling without lid removal.\u003c\/p\u003e \u003cp\u003ePP is autoclave-compatible at 121°C with better cycle durability than PS — PP lids maintain their geometry through repeated autoclave cycles without the warping that limits PS lids to fewer sterilization cycles. For virus propagation labs, primary cell culture programs, and any workflow where lids are sterilized between uses rather than used once and discarded, PP provides the preferred combination of chemical resistance, autoclave durability, and transparent monitoring access.\u003c\/p\u003e \u003cp\u003eAt $77.67 per Box of 15 — $0.7398 per lid — the PP lid delivers the chemical and autoclave performance advantages at the same price point as the PS variant. Choose PP  over PS (290-8125-01L) whenever DMSO-containing media, lipophilic compound carriers, or repeated autoclave sterilization are part of the workflow.\u003c\/p\u003e \u003ch2\u003eTechnical Specifications — Caplugs® Evergreen \u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003cth\u003eValue\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003ePart Number\u003c\/td\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCaplugs Item #\u003c\/td\u003e \u003ctd\u003e290812603LE1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWell Format\u003c\/td\u003e \u003ctd\u003e24-well SBS\/ANSI standard footprint\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial\u003c\/td\u003e \u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eColor\u003c\/td\u003e \u003ctd\u003eNatural (transparent)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDMSO Compat.\u003c\/td\u003e \u003ctd\u003e✓ Good at ≤30% — broader than PS lid\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave\u003c\/td\u003e \u003ctd\u003e✓ Compatible (121°C) — repeated cycles PP \u0026gt; PS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSterility\u003c\/td\u003e \u003ctd\u003eNon-Sterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003ePack Size\u003c\/td\u003e \u003ctd\u003e15\/Box (105\/Case)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eApplication\u003c\/td\u003e \u003ctd\u003e24-well cell culture, compound plates, organoid incubation\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBPA\/Phthalate\u003c\/td\u003e \u003ctd\u003eBPA-free; no phthalate plasticizers\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCountry of Origin\u003c\/td\u003e \u003ctd\u003eMade in U.S.A. (California)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003e24-Well PP Lid Workflow Compatibility — \u003c\/h2\u003e \u003cp\u003eThe PP lid provides the same 24-well coverage as the PS variant (290-8125-01L) with broader chemical resistance and autoclave durability for demanding applications:\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eApplication\u003c\/th\u003e \u003cth\u003eAssay \/ Use\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eCell culture incubation\u003c\/td\u003e \u003ctd\u003eAdherent\/suspension 24-well culture\u003c\/td\u003e \u003ctd\u003ePP lid compatible with organic solvent-containing media formulations\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCompound-treated culture\u003c\/td\u003e \u003ctd\u003eDMSO compound plates \u0026gt;10% DMSO\u003c\/td\u003e \u003ctd\u003ePP resists DMSO at concentrations that stress PS lids\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eVirus propagation\u003c\/td\u003e \u003ctd\u003eCPE assay, plaque assay incubation\u003c\/td\u003e \u003ctd\u003ePP autoclave-compatible for sterilization before use\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOrganoid culture (covered)\u003c\/td\u003e \u003ctd\u003e3D organoid in Matrigel\/BME, multi-day\u003c\/td\u003e \u003ctd\u003ePP lid suitable for extended incubation without solvent stress\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave sterilization\u003c\/td\u003e \u003ctd\u003ePre-sterilized lid supply for cell culture\u003c\/td\u003e \u003ctd\u003ePP withstands autoclave cycles better than PS for repeated use\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDrug-containing media\u003c\/td\u003e \u003ctd\u003eLipophilic compound formulations in DMSO carrier\u003c\/td\u003e \u003ctd\u003ePP broader solvent resistance than PS for challenging formulations\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003cem\u003eAutoclave PP lids in a pouch — allow to cool before placing on culture plates. Confirm lid-to-plate fit with a sample pair before bulk purchase.\u003c\/em\u003e\u003c\/p\u003e \u003ch2\u003eChemical Resistance — Polypropylene (PP)\u003c\/h2\u003e \u003cp\u003ePP provides broader chemical resistance than PS — particularly for DMSO-containing compound plates and repeated autoclave sterilization.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eReagent \/ Condition\u003c\/th\u003e \u003cth\u003eCompatibility\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eAqueous buffers\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCell culture media\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDMSO (≤30%)\u003c\/td\u003e \u003ctd\u003e✓ Good — broader than PS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eShort-chain alcohols (broad)\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDilute acids \/ alkalies (\u0026lt;10%)\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAcetone (brief)\u003c\/td\u003e \u003ctd\u003e✓ Good — brief contact\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave (121°C \/ 15 psi)\u003c\/td\u003e \u003ctd\u003e✓ Compatible\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRepeated autoclave cycles\u003c\/td\u003e \u003ctd\u003e✓ PP resists better than PS\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eLaboratory Applications\u003c\/h2\u003e \u003cp\u003eThe serves drug discovery cell culture programs running DMSO compound treatment plates; virus propagation labs requiring autoclave-sterilized lids for plaque assay and TCID50 incubation; primary cell culture programs with repeated lid sterilization protocols; organoid culture programs using Matrigel or BME formulations containing organic solvent carriers; and any 24-well cell culture workflow where PS lid solvent resistance or autoclave durability is a documented concern.\u003c\/p\u003e \u003ch2\u003eU.S. Manufacturing, Quality \u0026amp; Institutional Procurement\u003c\/h2\u003e \u003cp\u003eEvery Caplugs® Evergreen lot is precision-molded at our California manufacturing facility and subject to rigorous dimensional inspection and material purity verification. We supply reference laboratories, hospital systems, biotech firms, and federal procurement offices under institutional pricing programs with blanket-order support and same-day shipping on stocked inventory. \u003ca href=\"#request-sample\"\u003eRequest a sample below\u003c\/a\u003e to validate before committing to volume.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions — Caplugs® Evergreen \u003c\/h2\u003e \u003ch3\u003eWhat is the difference between the PP lid  and the PS lid (290-8125-01L)?\u003c\/h3\u003e \u003cp\u003eBoth fit standard SBS 24-well plates and are priced identically. The key differences: PP  provides broader DMSO tolerance (≤30% vs PS ≤10%), better resistance to lipophilic compound carriers, and greater autoclave cycle durability — PP maintains geometry through repeated 121°C cycles better than PS. PS (290-8125-01L) provides slightly higher optical clarity. Choose PP for DMSO compound plates, organic solvent formulations, and repeated-autoclave workflows. Choose PS for standard aqueous cell culture where DMSO exposure is minimal.\u003c\/p\u003e \u003ch3\u003eIs the PP lid compatible with repeated autoclave sterilization?\u003c\/h3\u003e \u003cp\u003eYes. PP maintains its geometry through multiple autoclave cycles at 121°C \/ 15 psi better than PS, which can warp under repeated thermal cycling. For labs sterilizing lids between uses — viral work, primary cell culture, contamination-sensitive programs — PP is the preferred lid material. Always allow lids to cool completely before placing on culture plates.\u003c\/p\u003e \u003ch3\u003eAre the PP lids BPA-free?\u003c\/h3\u003e \u003cp\u003eYes. The is molded from virgin Polypropylene (PP) containing no BPA and no phthalate plasticizers.\u003c\/p\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"24-Well Microplate Lids, Non-Sterile, Polypropylene (PP), Natural \\u2014 290-8126-03L | 15\/Box (105\/Case) | Caplugs\\u00ae Evergreen\",\n  \"description\": \"Caplugs\\u00ae Evergreen 290-8126-03L. 24-well PP microplate lids, natural, 15\/Box (105\/Case). DMSO-compatible. Autoclave-compatible. BPA-free. USA.\",\n  \"sku\": \"290812603LE1\",\n  \"mpn\": \"290-8126-03L\",\n  \"material\": \"Polypropylene (PP)\",\n  \"color\": \"Natural\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs\\u00ae Evergreen\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Caplugs\\u00ae Evergreen\",\n    \"address\": {\n      \"@type\": \"PostalAddress\",\n      \"addressCountry\": \"US\",\n      \"addressRegion\": \"CA\"\n    }\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"77.67\",\n    \"priceCurrency\": \"USD\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"LabSupplies\"\n    }\n  },\n  \"additionalProperty\": [\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Pack Size\",\n      \"value\": \"105 \/ Box\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Sterility\",\n      \"value\": \"Non-Sterile\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Country of Origin\",\n      \"value\": \"United States\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"BPA Free\",\n      \"value\": \"Yes\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Well Format\",\n      \"value\": \"24-well SBS\"\n    }\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the PP lid (290-8126-03L) and the PS lid (290-8125-01L)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Both fit standard SBS 24-well plates and are priced identically. The key differences: PP (290-8126-03L) provides broader DMSO tolerance (\\u226430% vs PS \\u226410%), better resistance to lipophilic compound carriers, and greater autoclave cycle durability \\u2014 PP maintains geometry through repeated 121\\u00b0C cycles better than PS. PS (290-8125-01L) provides slightly higher optical clarity. Choose PP for DMSO compound plates, organic solvent formulations, and repeated-autoclave workflows. Choose PS for standard aqueous cell culture where DMSO exposure is minimal.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the PP lid compatible with repeated autoclave sterilization?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. PP maintains its geometry through multiple autoclave cycles at 121\\u00b0C \/ 15 psi better than PS, which can warp under repeated thermal cycling. For labs sterilizing lids between uses \\u2014 viral work, primary cell culture, contamination-sensitive programs \\u2014 PP is the preferred lid material. Always allow lids to cool completely before placing on culture plates.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are the PP lids BPA-free?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 290-8126-03L is molded from virgin Polypropylene (PP) containing no BPA and no phthalate plasticizers.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48565296136424,"sku":"290-8126-03L","price":77.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/290-8216-03L_02_d5f4a90b-ffed-4acd-a9a0-b53581bda1b9.jpg?v=1778982984","url":"https:\/\/labsupplies.com\/products\/caplugs-290-8126-03l-24-well-microplate-lid-pp-natural","provider":"LabSupplies.com","version":"1.0","type":"link"}