{"title":"Polystyrene Microspheres","description":"\u003cp data-start=\"642\" data-end=\"1115\"\u003ePolysciences offers a broad selection of high-quality polystyrene microspheres used in life sciences, diagnostics, and research applications. Available in multiple diameters, surface chemistries, and formats, our microspheres are trusted for their consistency and reliability. Whether you're developing assays, calibrating instruments, or conducting particle-based research, we have the solution. For custom formulations or technical support, our team is ready to help.\u003c\/p\u003e","products":[{"product_id":"polybead-microspheres-010956m","title":"Polybead® Microspheres 0.10μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.10µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 15%\n\u003cbr\u003e4.55 x 1013 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"00876-15 (15 ml)","offer_id":46442667245782,"sku":"00876-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_35ce98f3-ac72-4bf2-af37-b085bb78d969.jpg?v=1736361509"},{"product_id":"polybead-microspheres-020956m","title":"Polybead® Microspheres 0.20μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.20µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 8%\n\u003cbr\u003e5.68 x 1012 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07304-15 (15 ml)","offer_id":46442667704534,"sku":"07304-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_2_3051dab2-9bed-461c-aa97-897841974ebe.jpg?v=1736361522"},{"product_id":"polybead-microspheres-035956m","title":"Polybead® Microspheres 0.35μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.35µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 5%\n\u003cbr\u003e1.06 x 1012 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07306-15 (15 ml)","offer_id":46442667802838,"sku":"07306-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_3_08fc250e-56bb-4e1c-a147-0f1588d7cc82.jpg?v=1736361526"},{"product_id":"polybead-microspheres-050956m","title":"Polybead® Microspheres 0.50μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.50µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 3%\n\u003cbr\u003e3.64 x 1011 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07307-15 (15 ml)","offer_id":46442667999446,"sku":"07307-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_4_936f3df7-e25b-45bb-964a-f50e59235a9d.jpg?v=1736361530"},{"product_id":"polybead-microspheres-075956m","title":"Polybead® Microspheres 0.75μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.75µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 3%\n\u003cbr\u003e1.08 x 1011 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07309-15 (15 ml)","offer_id":46442668163286,"sku":"07309-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_5_4191acfe-9360-4197-973e-37321d41da27.jpg?v=1736361534"},{"product_id":"polybead-microspheres-100181m","title":"Polybead® Microspheres 1.00µm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e1.00µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 3%\n\u003cbr\u003e4.55 x 1010 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07310-15 (15 ml)","offer_id":46442668228822,"sku":"07310-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_6_96675c9f-58df-4356-b6fe-84590853ddb6.jpg?v=1736361538"},{"product_id":"polybead-microspheres-600181m","title":"Polybead® Microspheres 6.00µm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e6.00µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 10%\n\u003cbr\u003e2.10 x 108 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07312-5 (5 ml)","offer_id":46442668261590,"sku":"07312-5","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_5_2c146e70-447e-4a5b-be08-03c79a12bf7f.jpg?v=1736361543"},{"product_id":"polybead-microspheres-2500m","title":"Polybead® Microspheres 25.00µm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e25.0µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 10%\n\u003cbr\u003eCrosslinked with divinylbenzene\n\u003cbr\u003e2.91 x 106 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07313-5 (5 ml)","offer_id":46442668327126,"sku":"07313-5","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_9_7b74ba24-9eff-42a7-8e17-b3a8a96d6a42.jpg?v=1736361547"},{"product_id":"polybead-microspheres-4500181m","title":"Polybead® Microspheres 45.00µm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e45.0µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v)aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 10%\n\u003cbr\u003eCrosslinked with divinylbenzene\n\u003cbr\u003e4.99 x 105 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07314-5 (5 ml)","offer_id":46442668359894,"sku":"07314-5","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_10_c55d3f1a-36cb-49c2-8b17-32554d18766e.jpg?v=1736361551"},{"product_id":"polybead-microspheres-9000181m","title":"Polybead® Microspheres 90.00µm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Diameters 4.5μm and larger are crosslinked with divinylbenzene (DVB). Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e90.0µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 10%\n\u003cbr\u003eCrosslinked with divinylbenzene\n\u003cbr\u003e6.24 x 104 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07315-5 (5 ml)","offer_id":46442668589270,"sku":"07315-5","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_12_8b583ad0-a81a-4a93-90e1-a6fde0d0409e.jpg?v=1736361556"},{"product_id":"polybead-carboxylate-microspheres-075956m","title":"Polybead® Carboxylate Microspheres 0.75μm","description":"\u003cp\u003ePolybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.75µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 3%\n\u003cbr\u003e1.08 x 1011 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07759-15 (15 ml)","offer_id":46442670031062,"sku":"07759-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_18_86b79511-b81e-4e38-8984-da3de37cf942.jpg?v=1736361590"},{"product_id":"polybead-hydroxylate-microspheres-050956m","title":"Polybead® Hydroxylate Microspheres 0.50μm","description":"\u003cp\u003ePolybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.50µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e3.64 x 1011 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07762-15 (15 ml)","offer_id":46442670096598,"sku":"07762-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_38_b137d92c-abcb-4ee7-b9b5-a37aa7d5b626.jpg?v=1736361594"},{"product_id":"polybead-amino-microspheres-050956m","title":"Polybead® Amino Microspheres 0.50μm","description":"\u003cp\u003ePolybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.50µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 11%\n\u003cbr\u003e3.64 x 1011 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07763-5 (5 ml)","offer_id":46442670129366,"sku":"07763-5","price":252.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_28_8b79f02c-0c89-4223-aaab-a008db35d464.jpg?v=1736361599"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-075m","title":"Fluoresbrite® YG Carboxylate Microspheres 0.75µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.75µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e1.08 x 1011 particles\/ml\n\u003cbr\u003eDiameter Coefficient of Variation (CV) = 3%\n\u003cbr\u003eExcitation max. = 441nm\n\u003cbr\u003eEmission max. = 486nm\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"07766-10 (10 ml)","offer_id":46442670162134,"sku":"07766-10","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/yg_spectra_31_0fd2ef80-2e60-4922-a606-7cb88c2d9ac9-504330.jpg?v=1737983105"},{"product_id":"polybead-carboxylate-microspheres-020956m","title":"Polybead® Carboxylate Microspheres 0.20μm","description":"\u003cp\u003ePolybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.20µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 8%\n\u003cbr\u003e5.68 x 1012 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"08216-15 (15 ml)","offer_id":46442670194902,"sku":"08216-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_15_07ef913d-0f53-47a5-8a0b-cf1566561894.jpg?v=1736361608"},{"product_id":"polybead-carboxylate-microspheres-100956m","title":"Polybead® Carboxylate Microspheres 1.00μm","description":"\u003cp\u003ePolybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e1.00µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 3%\n\u003cbr\u003e4.55 x 1010 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"08226-15 (15 ml)","offer_id":46442670358742,"sku":"08226-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_19_855d4fd4-76d2-4dbf-9988-857ca25a9bda.jpg?v=1736361612"},{"product_id":"polybead-microspheres-005956m","title":"Polybead® Microspheres 0.05μm","description":"\u003cp\u003ePolybead® Microspheres are monodisperse polystyrene microspheres available in sizes from 50nm to 90μm. Our experienced chemists control the synthesis to provide precise monodisperse particle size distributions. These particles contain a slight anionic charge from sulfate ester.\n\u003cbr\u003eMost Polybead® Microspheres are packaged in an economical 2.5% solids (w\/v) aqueous suspension with minimal surfactant in the final preparation. Polybead® Microspheres are ideally suited for protein binding using passive adsorption techniques.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.05µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 15%\n\u003cbr\u003e3.64 x 1014 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"08691-10 (10 ml)","offer_id":46442670751958,"sku":"08691-10","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_838547ff-a4c1-4be7-9e4e-00dd46fdcd21.jpg?v=1736361621"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-150m","title":"Fluoresbrite® YG Carboxylate Microspheres 1.50µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e1.50µm particles packaged as 2.5% aqueous suspension. \n\u003cbr\u003e1.349 x 1010 beads\/mL\n\u003cbr\u003eExcitation max. = 441nm   \n\u003cbr\u003eEmission max. = 486nm\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"09719-10 (10 ml)","offer_id":46442670817494,"sku":"09719-10","price":484.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/yg_spectra_25_ffd7953a-0187-48c0-b317-6c4a6b7d3530-138717.jpg?v=1737983105"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-020m","title":"Fluoresbrite® YG Carboxylate Microspheres 0.20µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. 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See Technical Data Sheet 238D.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e6.00µm particles packaged as 2.5% aqueous suspension. \n\u003cbr\u003e2.10 x 108 particles\/ml\n\u003cbr\u003eCoefficient of Variation (CV) = 10%\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"15715-5 (5 ml)","offer_id":46442673438934,"sku":"15715-5","price":301.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/NEW_blue_polybeads_3_ca9cb3d0-428a-4395-950f-55d3c29423d6.png?v=1738252396"},{"product_id":"polybead-polystyrene-yellow-dyed-microspheres-600956m","title":"Polybead® Polystyrene Yellow Dyed Microspheres 6.00μm","description":"\u003cp\u003eOur dyed Polybeads® are packaged in an economical 2.5% aqueous suspension and are available in a variety of sizes and colors.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e6.00µm particles packaged as 2.5% aqueous suspension. \n\u003cbr\u003e2.10 x 108 particles\/ml\n\u003cbr\u003eCoefficient of Variation (CV) = 10%\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"15716-5 (5 ml)","offer_id":46442673471702,"sku":"15716-5","price":301.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/NEW_yellow_polybeads_7_2c73c83b-56c6-4d55-a934-77ec5aaf45c7.png?v=1738252396"},{"product_id":"polybead-hydroxylate-microspheres-020956m","title":"Polybead® Hydroxylate Microspheres 0.20μm","description":"\u003cp\u003ePolybead® Hydroxylate Microspheres are monodisperse particles that contain surface hydroxyl groups. These particles are packaged in an economical suspension of 2.5% solids in water.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.20µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e5.68 x 1012 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"15717-15 (15 ml)","offer_id":46442673635542,"sku":"15717-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_37_cbf785be-7fb4-40e3-85be-3ce11398ccf1.jpg?v=1736361751"},{"product_id":"polybead-carboxylate-microspheres-005956m","title":"Polybead® Carboxylate Microspheres 0.05μm","description":"\u003c!-- PDP Content: Polybead® Carboxylate Microspheres 0.05 µm (15913) --\u003e\n\u003cstyle\u003e\n  \/* ===== Base layout (tight spacing) ===== *\/\n  .pdp-content { line-height: 1.55; }\n\n  .pdp-content h2{\n    font-size: 1.35rem;\n    font-weight: 700;\n    margin: 0.9rem 0 0.4rem;\n  }\n\n  .pdp-content h3{\n    font-size: 1.1rem;\n    font-weight: 700;\n    margin: 0.7rem 0 0.35rem;\n  }\n\n  .pdp-content p{ margin: 0 0 0.45rem; }\n\n  .pdp-content ul{\n    margin: 0.3rem 0 0.6rem;\n    padding-left: 1.1rem;\n    list-style: disc;\n  }\n\n  .pdp-content li{ margin: 0.25rem 0; }\n\n  \/* Divider – compact *\/\n  .pdp-divider{\n    border: 0;\n    border-top: 1px solid rgba(0,0,0,0.15);\n    margin: 0.6rem 0 0.4rem;\n  }\n\n  \/* ===== FAQ Section ===== *\/\n  .pdp-faq h2{\n    font-size: 1.35rem;\n    font-weight: 700;\n    margin: 0 0 0.35rem;\n  }\n\n  .pdp-faq .faq-intro{\n    margin: 0 0 0.55rem;\n    line-height: 1.5;\n    color: #333;\n  }\n\n  .pdp-faq ul{\n    margin: 0;\n    padding-left: 1.1rem;\n    list-style: disc;\n  }\n\n  .pdp-faq li{ margin-bottom: 0.55rem; }\n\n  .pdp-faq summary{\n    cursor: pointer;\n    font-weight: 600;\n    line-height: 1.4;\n    list-style: none;\n    display: list-item;\n    -webkit-tap-highlight-color: transparent;\n  }\n\n  .pdp-faq summary::-webkit-details-marker{ display: none; }\n\n  .pdp-faq details[open] summary{ margin-bottom: 0.25rem; }\n\n  .pdp-faq .answer{\n    margin-left: 1.1rem;\n    line-height: 1.55;\n    font-size: 0.97rem;\n  }\n\n  .pdp-faq .answer p{ margin: 0.3rem 0 0.45rem; }\n\n  @media (max-width: 480px){\n    .pdp-content h2,\n    .pdp-faq h2{ font-size: 1.25rem; }\n    .pdp-faq .answer{ margin-left: 0.9rem; }\n  }\n\u003c\/style\u003e\n\n\u003csection class=\"pdp-content\" aria-label=\"Product information\"\u003e\n\n  \u003ch2\u003ePolybead® Carboxylate Microspheres, 0.05 µm (15913)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Polybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain\n    surface carboxyl (–COOH) groups. The carboxylated surface supports covalent attachment\n    of biomolecules (such as proteins) to the bead surface using common coupling approaches.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    This product is supplied as a \u003cstrong\u003e2.5% solids (w\/v) aqueous suspension\u003c\/strong\u003e.\n    The specifications below reflect the nominal reference values provided for this size.\n  \u003c\/p\u003e\n\n  \u003chr class=\"pdp-divider\"\u003e\n\n  \u003ch3\u003eKey Properties\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParticle type:\u003c\/strong\u003e Polystyrene microspheres with surface carboxyl groups\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMean diameter (nominal):\u003c\/strong\u003e 0.05 µm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuspension:\u003c\/strong\u003e 2.5% solids (w\/v) in water\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCoefficient of variance (CV, nominal):\u003c\/strong\u003e 15%\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eParticle concentration (nominal):\u003c\/strong\u003e 3.64 × 10\u003csup\u003e14\u003c\/sup\u003e particles\/mL\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"pdp-divider\"\u003e\n\n  \u003ch3\u003eTypical Applications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eBioconjugation and assay development:\u003c\/strong\u003e\n      Carboxylated particles are commonly used as a platform for covalent attachment of proteins or other ligands\n      to support immunoassays and binding studies.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eSurface chemistry and adsorption studies:\u003c\/strong\u003e\n      Useful for evaluating polymer–protein interactions and surface functionalization workflows on small particles.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eNanoparticle research and method development:\u003c\/strong\u003e\n      Applied in R\u0026amp;D settings for particle-handling, dispersion, and measurement workflows where small, functionalized\n      microspheres are needed.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- FAQs --\u003e\n  \u003csection class=\"pdp-faq\" aria-labelledby=\"pdp-faq-title\"\u003e\n    \u003chr class=\"pdp-divider\"\u003e\n    \u003ch2 id=\"pdp-faq-title\"\u003eFAQs\u003c\/h2\u003e\n    \u003cp class=\"faq-intro\"\u003e\n      Common questions about \u003cstrong\u003ePolybead® Carboxylate Microspheres, 0.05 µm\u003c\/strong\u003e.\n    \u003c\/p\u003e\n\n    \u003cul\u003e\n      \u003cli\u003e\n        \u003cdetails\u003e\n          \u003csummary\u003eWhat does “carboxylate” mean for these microspheres?\u003c\/summary\u003e\n          \u003cdiv class=\"answer\"\u003e\n            \u003cp\u003e\n              “Carboxylate” indicates that the particle surface contains carboxyl (–COOH) functional groups.\n              These groups can be used to modify surface properties and are commonly leveraged for covalent\n              attachment of biomolecules in research workflows.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n      \u003c\/li\u003e\n\n      \u003cli\u003e\n        \u003cdetails\u003e\n          \u003csummary\u003eWhat is the difference between mean diameter and CV?\u003c\/summary\u003e\n          \u003cdiv class=\"answer\"\u003e\n            \u003cp\u003e\n              The \u003cstrong\u003emean diameter\u003c\/strong\u003e is the nominal average particle size.\n              The \u003cstrong\u003ecoefficient of variance (CV)\u003c\/strong\u003e is a measure of size distribution width; lower CV values\n              generally indicate a narrower distribution (more uniform particles).\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n      \u003c\/li\u003e\n\n      \u003cli\u003e\n        \u003cdetails\u003e\n          \u003csummary\u003eHow are proteins typically attached to carboxylated beads?\u003c\/summary\u003e\n          \u003cdiv class=\"answer\"\u003e\n            \u003cp\u003e\n              Carboxyl groups are commonly coupled to amine-containing biomolecules using widely used\n              activation\/coupling chemistries. The appropriate method depends on your target molecule,\n              buffer system, and downstream assay requirements.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n      \u003c\/li\u003e\n\n      \u003cli\u003e\n        \u003cdetails\u003e\n          \u003csummary\u003eHow should I handle a 2.5% solids aqueous microsphere suspension?\u003c\/summary\u003e\n          \u003cdiv class=\"answer\"\u003e\n            \u003cp\u003e\n              Microsphere suspensions are typically mixed thoroughly before use to ensure uniform dispersion.\n              Follow your lab’s handling practices and the product documentation (e.g., SDS\/COA) for storage\n              and stability guidance.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/details\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n\u003c\/section\u003e\n","brand":"Polysciences","offers":[{"title":"15913-10 (10 ml)","offer_id":46442673799382,"sku":"15913-10","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_13_6048fd35-5ffd-4b51-83a0-a40dcde73508.jpg?v=1736361755"},{"product_id":"polybead-amino-microspheres-010956m","title":"Polybead® Amino Microspheres 0.10μm","description":"\u003cp\u003ePolybead® Amino Microspheres are monodisperse polystyrene microspheres that contain surface primary amine groups. Protein coupling using glutaraldehyde as a coupling agent will result in protein binding 11-12 carbon atoms from the surface of the bead. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.Nominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e\t0.10µm mean diameter\n\u003cbr\u003e\t2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003e\tCoefficient of Variance (CV): 25%\n\u003cbr\u003e\t4.55 x 1013 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16586-5 (5 ml)","offer_id":46442674520278,"sku":"16586-5","price":252.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_26_8524f587-164f-491b-83db-51db3de3506e.jpg?v=1736361772"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-450m","title":"Fluoresbrite® YG Carboxylate Microspheres 4.50µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e4.50µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e4.99 x 108 particles\/ml\n\u003cbr\u003eDiameter Coefficient of Variation (CV) = 7%\n\u003cbr\u003eExcitation max. = 441nm\n\u003cbr\u003eEmission max. = 486nm\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16592-5 (5 ml)","offer_id":46442674553046,"sku":"16592-5","price":703.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/yg_spectra_18_f98d7b81-e3da-4254-90f3-4aacd4e333e1-577299.jpg?v=1737983105"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-005m","title":"Fluoresbrite® YG Carboxylate Microspheres 0.05µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.05µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e3.64 x 1014 particles\/ml\n\u003cbr\u003eDiameter Coefficient of Variation (CV) = 15%\n\u003cbr\u003eExcitation max. = 441nm\n\u003cbr\u003eEmission max. = 486nm\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16661-10 (10 ml)","offer_id":46442674618582,"sku":"16661-10","price":544.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/yg_spectra_22_3ba03e15-fcd4-4bf2-b892-cbc513c9f38f-642992.jpg?v=1737983105"},{"product_id":"fluoresbrite-yg-carboxylate-microspheres-010m","title":"Fluoresbrite® YG Carboxylate Microspheres 0.10µm","description":"\u003cp\u003eFluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences' Fluoresbrite® particles are used worldwide in phagocytosis and neural retrograde transport studies, and as markers for cell bound antigens. These microspheres are packaged as 2.5% aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.10µm particles packaged as 2.5% aqueous suspension.\n\u003cbr\u003e4.55 x 1013 particles\/ml\n\u003cbr\u003eDiameter Coefficient of Variation (CV) = 10%\n\u003cbr\u003eExcitation max. = 441nm\n\u003cbr\u003eEmission max. = 486nm\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16662-10 (10 ml)","offer_id":46442674880726,"sku":"16662-10","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/yg_spectra_29_fe16b9be-d4dd-4ced-b262-1bc8bb49503d-317809.jpg?v=1737983105"},{"product_id":"polybead-carboxylate-microspheres-010956m","title":"Polybead® Carboxylate Microspheres 0.10μm","description":"\u003cp\u003ePolybead® Carboxylate Microspheres are monodisperse polystyrene microspheres that contain surface carboxyl groups. This allows for the covalent binding of proteins to the bead surface. These microspheres are packaged as 2.5% solids (w\/v) aqueous suspensions.\n\u003cbr\u003eNominal Reference Values:\u003c\/p\u003e\n\n\u003cp\u003e0.10µm mean diameter\n\u003cbr\u003e2.5% solids (w\/v) aqueous suspension\n\u003cbr\u003eCoefficient of Variance (CV): 15%\n\u003cbr\u003e4.55 x 1013 particles\/ml\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16688-15 (15 ml)","offer_id":46442675470550,"sku":"16688-15","price":251.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeadscaption_1_14_a8e2d671-6f57-4de4-8751-bf99aecec022.jpg?v=1736361790"},{"product_id":"polybead-sampler-kit-iii","title":"Polybead® Sampler Kit III","description":"\u003cp\u003eKit contains 1ml of standard monodisperse polystyrene microspheres (2.5% solids [w\/v] in water) for each of these nominal sizes: 0.05μm, 0.20μm, 0.50μm, 1.0μm, 45.0μm and 90.0μm.\u003c\/p\u003e","brand":"Polysciences","offers":[{"title":"16905-1 (1 kit)","offer_id":46442675667158,"sku":"16905-1","price":311.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5258\/2358\/files\/polybeads_2_f9061e8f-0f4d-4216-94b7-b2b6a3d191fe.jpg?v=1736361804"}],"url":"https:\/\/polysciences.com\/collections\/polystyrene-microspheres.oembed?page=4","provider":"Polysciences","version":"1.0","type":"link"}