{"product_id":"caplugs-290-8029-w1r-96-well-round-microplate-ps-white","title":"0.32 mL Microplates, Round Bottom, PS, White — 290-8029-W1R | 9\/Box | Caplugs® Evergreen","description":"\u003ch2\u003e96-Well Round Bottom Microplates, 0.32 mL Well Volume, PS, White — 290-8029-W1R | 9\/Box (90\/Case)\u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eQuick Reference — 290-8029-W1R\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWell Format\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e96-well SBS\/ANSI standard footprint\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eBottom Geometry\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRound Bottom\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWell Volume\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.32 mL\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eWhite\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrimary Use\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSuspension cell-based luminescence assays and agglutination assays requiring both round-bottom cell\/particle behavior and enhanced luminescence signal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSterility\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNon-Sterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e9\/Box (90\/Case)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e$127.63 \/ Box ($1.4181 \/ plate)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTechnical Narrative\u003c\/h2\u003e \u003cp\u003eThe Caplugs® Evergreen is a 96-well round bottom Polystyrene (PS) microplate in white for suspension cell-based luminescence assays and agglutination assays requiring both round-bottom cell\/particle behavior and enhanced luminescence signal. The white round bottom combines two properties that suspension luminescence assays require simultaneously: round-bottom well geometry for suspension cell culture, and white reflective PS walls that maximize luminescence signal from luciferase and ATP bioluminescence reporter systems. White PS is specified for luminescence-based assays in suspension cell culture — combining the round-bottom geometry needed for suspension cells with the reflective white surface that maximizes luminescence signal detection.\u003c\/p\u003e \u003cp\u003eAll 96-well Caplugs® Evergreen microplates conform to the SBS\/ANSI microplate standard footprint (127.76 × 85.47 mm), ensuring compatibility with all standard plate readers (SpectraMax, PHERAstar, Synergy, Infinite, EnVision), automated liquid handlers (Hamilton, Tecan, Bravo), plate washers, and robotic gripper arm systems. The 0.32 mL well volume accommodates standard assay reagent addition sequences across the primary applications for round format plates. PS construction is compatible with all standard aqueous assay buffers, culture media, and detection reagents.\u003c\/p\u003e \u003cp\u003eAt $127.63 per Box of 9 — $1.4181 per plate — the delivers round PS microplate economics for programs running 10–200+ plates per week. The 9\/Box (90\/Case) format supports both per-box and case-quantity ordering.\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\u003e2908029W1RE1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWell Format\u003c\/td\u003e \u003ctd\u003e96-well SBS\/ANSI standard footprint\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBottom Geometry\u003c\/td\u003e \u003ctd\u003eRound Bottom\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWell Volume\u003c\/td\u003e \u003ctd\u003e0.32 mL (working volume typically 50–80% of max)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial\u003c\/td\u003e \u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eColor\u003c\/td\u003e \u003ctd\u003eWhite\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\u003e9\/Box (90\/Case)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eApplication\u003c\/td\u003e \u003ctd\u003eSuspension cell-based luminescence assays and agglutination assays requiring both round-bottom cell\/particle behavior and enhanced luminescence signal\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\u003eAssay \u0026amp; Application Compatibility — Round Bottom, White\u003c\/h2\u003e \u003cp\u003eRound bottom PS white plates are the standard format for suspension cell-based luminescence assays and agglutination assays requiring both round-bottom cell\/particle behavior and enhanced luminescence signal. Compatible workflows:\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 viability (luminescence)\u003c\/td\u003e \u003ctd\u003eCellTiter-Glo, CTG 2.0, ATPlite\u003c\/td\u003e \u003ctd\u003eWhite round-bottom: max luminescence from suspension cell pellet\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSuspension cell reporter assays\u003c\/td\u003e \u003ctd\u003eLuciferase reporter in suspension cells\u003c\/td\u003e \u003ctd\u003eWhite enhances luciferase signal; round bottom for suspension culture\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHAI \/ hemagglutination (enhanced read)\u003c\/td\u003e \u003ctd\u003eFlu virus titer, VN assay\u003c\/td\u003e \u003ctd\u003eRound bottom for uniform RBC distribution; white for optical read\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHybridoma luminescence screening\u003c\/td\u003e \u003ctd\u003eLuminescent reporter hybridoma clones\u003c\/td\u003e \u003ctd\u003eCombined benefit of U-bottom culture and white luminescence signal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBioluminescence imaging\u003c\/td\u003e \u003ctd\u003eWhole-well bioluminescence detection\u003c\/td\u003e \u003ctd\u003eWhite wells maximize photon capture for imaging-compatible luminometers\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eATP bioluminescence (suspension)\u003c\/td\u003e \u003ctd\u003eBacterial ATP, metabolic activity\u003c\/td\u003e \u003ctd\u003eWhite round-bottom: complete suspension culture + luminescence read\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eADCC \/ CDC cytotoxicity\u003c\/td\u003e \u003ctd\u003eAntibody-dependent cellular cytotoxicity\u003c\/td\u003e \u003ctd\u003eRound bottom for effector\/target cell co-culture with luminescence readout\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCell-based NF-κB assays\u003c\/td\u003e \u003ctd\u003eSuspension Jurkat reporter cells\u003c\/td\u003e \u003ctd\u003eWhite round-bottom for dual suspension culture + luminescence read\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003cem\u003eWhite PS is specified for luminescence-based assays in suspension cell culture — combining the round-bottom geometry needed for suspension cells with the reflective white surface that maximizes luminescence signal detection.\u003c\/em\u003e\u003c\/p\u003e \u003ch2\u003eChemical Resistance — Polystyrene (PS)\u003c\/h2\u003e \u003cp\u003ePS provides excellent resistance to aqueous assay reagents. Not autoclave-compatible. Avoid acetone and chlorinated solvents.\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 (PBS, TBS, HEPES)\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCell culture media (DMEM, RPMI)\u003c\/td\u003e \u003ctd\u003e✓ Excellent\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDMSO (≤10%)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eShort-chain alcohols (brief)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDilute acids \/ alkalies (\u0026lt;10%)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFormalin (4%, fixation step)\u003c\/td\u003e \u003ctd\u003e✓ Good\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAcetone\u003c\/td\u003e \u003ctd\u003e✗ Avoid\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eChlorinated solvents\u003c\/td\u003e \u003ctd\u003e✗ Avoid\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAutoclave (121°C)\u003c\/td\u003e \u003ctd\u003e✗ Not compatible\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eLaboratory Applications\u003c\/h2\u003e \u003cp\u003eThe white round-bottom plate serves cell biology programs running luciferase reporter assays in suspension cells; virology and immunology labs combining HAI\/agglutination with luminescence detection; drug discovery programs using ATP bioluminescence in suspension cells; and any application requiring both U-bottom suspension culture geometry and white-plate luminescence signal enhancement.\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\u003eWhy use a white round-bottom plate instead of a white flat-bottom for luminescence?\u003c\/h3\u003e \u003cp\u003eWhite flat-bottom (290-8027-W1F) is optimal for adherent cell luminescence and absorbance assays where cells attach to the well floor. White round-bottom  is designed for suspension cell luminescence — the U-bottom geometry allows suspension cells to settle into a uniform pellet, while the white well walls maximize photon reflection for the luciferase or ATP bioluminescence read. Choose round-bottom when your cells are in suspension (Jurkat, primary lymphocytes, bacteria); choose flat-bottom when cells are adherent.\u003c\/p\u003e \u003ch3\u003eIs the suitable for CellTiter-Glo and similar luminescent cell viability assays?\u003c\/h3\u003e \u003cp\u003eYes. White round-bottom plates are the recommended format for CellTiter-Glo (CTG), CellTiter-Glo 2.0, and ATPlite luminescent cell viability assays with suspension cells. The white surface enhances ATP bioluminescence signal 2–5x versus clear plates, and the round bottom concentrates suspension cells for uniform CTG reagent mixing. For adherent cells, white flat-bottom (290-8027-W1F) is preferred.\u003c\/p\u003e \u003ch3\u003eIs the compatible with standard luminometers?\u003c\/h3\u003e \u003cp\u003eYes. The SBS\/ANSI standard footprint is compatible with all standard luminometers including SpectraMax L, Centro XS3, GloMax, and PHERAstar FSX in luminescence mode. White plates are optimized for top-read luminescence — the plate reader reads from above the well, and white walls reflect all photons toward the top detector.\u003c\/p\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"96-Well Microplates, Round Bottom, 0.32 mL Well Volume, Non-Sterile, Polystyrene (PS), White \\u2014 290-8029-W1R | 9\/Box (90\/Case) | Caplugs\\u00ae Evergreen\",\n  \"description\": \"Caplugs\\u00ae Evergreen 290-8029-W1R. 96-well round bottom microplate, PS white, 0.32 mL, 9\/Box (90\/Case). Cell culture, assays. BPA-free. USA.\",\n  \"sku\": \"2908029W1RE1\",\n  \"mpn\": \"290-8029-W1R\",\n  \"material\": \"Polystyrene (PS)\",\n  \"color\": \"White\",\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\": \"127.63\",\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\": \"90 \/ 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\": \"Bottom Geometry\",\n      \"value\": \"Round\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Well Volume\",\n      \"value\": \"0.32 mL\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Well Format\",\n      \"value\": \"96-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\": \"Why use a white round-bottom plate instead of a white flat-bottom for luminescence?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"White flat-bottom (290-8027-W1F) is optimal for adherent cell luminescence and absorbance assays where cells attach to the well floor. White round-bottom (290-8029-W1R) is designed for suspension cell luminescence \\u2014 the U-bottom geometry allows suspension cells to settle into a uniform pellet, while the white well walls maximize photon reflection for the luciferase or ATP bioluminescence read. Choose round-bottom when your cells are in suspension (Jurkat, primary lymphocytes, bacteria); choose flat-bottom when cells are adherent.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the 290-8029-W1R suitable for CellTiter-Glo and similar luminescent cell viability assays?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. White round-bottom plates are the recommended format for CellTiter-Glo (CTG), CellTiter-Glo 2.0, and ATPlite luminescent cell viability assays with suspension cells. 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