• These microspheres show a size distribution which is appropriate for methods that need particle size uniformity between monodisperse (highly uniform, <5% CV**) and polydisperse (widely distributed, <12% CV). These include instruments for light blockage, light diffraction, acoustical imaging, electrolyte displacement or other methods used for analysing wide size range materials. The material is composed of polystyrene cross-linked with divinylbenzene. This gives the particle good durability and chemical stability. They can be washed in water-alcohol mixtures and resuspended in water, air or similar media. The density of polystyrene is 1.05 g/cm3, and the index of refraction is 1.59 at 589nm (25C). Microspheres in this series are packaged as an aqueous suspension in 15 mL dropper-tipped vials.
  • This series of NIST traceable size standards provides an accurate and convenient method for calibrating or checking the performance of laser particle counters used in cleanrooms and other contamination monitoring applications. The products are suspensions of monodisperse polystyrene spheres (PSL) for use in airborne or liquid particle dispersion systems. They are available in a range of sizes from 0.1 to 100µm in diameter. The particles are prepared as low residue aqueous suspensions for minimal background interference, packaged in 15mL dropper-tipped vials. The particle diameters are calibrated by electron or optical microscopy. Each package includes a Certificate of Calibration and Traceability to the National Institute of Standards and Technology (NIST). In comparison with the well established 3000 and 4000 Series products described elsewhere, these product lines are precisely diluted for immediate use in laser particle counters with minimal time-consuming adjustments of concentration.
  • These uniform microspheres are NIST-traceable by calibration methods such as optical microscopy. Products from 1 to 160µm in diameter are packaged as aqueous suspensions of polystyrene spheres in dropper-tipped bottles. Diameters of 200µm and larger are packaged as dry spheres in screw-capped bottles. These larger particles are composed of polystyrene DVB (divinylbenzene). The spheres have a density of 1.05g/cm3 and an index of refraction of 1.59 @ 589nm.
  • Calibrate airborne optical particle counters (OPC) to comply with ISO 21501-4 regulations with the Thermo Scientific™ 4D Series Dry Microsphere Size Standards. Ideal for instrument manufacturers, as well as QA/QC managers in pharmaceutical, biotech and electronics manufacturing, these microsphere reference beads feature a calibration uncertainty—the range of values within which the actual mean diameter will lie—that is less than or equal to 2.5% of the mean diameter. 4D Series are available in 4 different nominal sizes: 3, 5, 7 and 10µm.
  • Small borosilicate glass microspheres have fewer spherical imperfections and inclusions than other glass microspheres. They also have better mechanical and thermal stability. This series has been calibrated with NIST traceable methods of optical microscopy. They are packaged as dry powders in 1 gram bottles. They have a density of 2.50-2.55g/cm 3 and an index of refraction of 1.56 @ 589nm (23°C). Brands: Thermo Scientific
  • Duke Scientific Corporation's new COUNT-CAL™ is a cost effective and convenient product for validating particle counters. Packaged in single-use bottles, and intended to be sampled directly from the bottle, it eliminates the need for serial dilutions and extensive sample handling, thereby minimizing contamination. The particles are suspended in an ultraclean diluent and the concentration is optimized for use in light obscuration particle counters and other low concentration counting applications. The particle diameters are traceable to the Standard Meter through the National Institute of Standards and Technology (NIST).
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Multiplex array analysis is a powerful technique enabling the simultaneous detection and quantitation of multiple analytes in a single sample. Using color coded microspheres, these tests can be carried out at flow cytometers. Cyto-Plex microspheres provide up to ten levels of red fluorescent intensities for analysis of ten different analytes. The Cyto-Plex microsphere kits consist of uniform particles with fluorescence intensities that are completely separated from each other. The microspheres are all the same size and have high-density carboxylated surfaces, providing very low non-specific binding and a consistent, uniform surface for coupling of a wide variety of anitbodies, nucleic acids and other biomolecules. Cyto-Plex microspheres have maximum emission at 700 nm, and can be excited with either 488 nm or 633 nm. Emission can be collected in 650 – 670 nm detector. Since there is little or no emission in FL1 and FL2, probes utilizing either of these channels can be effectively used as reporters.
  • Thermo Scientific provides these products for calibrating particle counters which require dry particles, from 5 to 100 µm. They are conveniently packaged in dropper-tipped vials in 1 gram quantities, enabling the user to dispense the microspheres directly into the sampling chamber. They are not suitable for dispersion in liquid media. The mean diameters are traceable to the National Institute of Standards and Technology (NIST). DRI-CAL™ Particle Size Standards are composed of polystyrene DVB (divinylbenzene) and have a density of 1.05g/cm3. The refractive index is 1.59 @ 589nm. The certified mean diameter was determined by optical microscopy using a NIST calibrated stage micrometer. Size distribution was determined by electrical resistance analysis.
  • Ezy-Cal™

    1.00
    This product line offers a series of ready-to-use standards for validating optical particle counters with no dilution and handling. The products are suspensions of monodisperse polymer microspheres in water with a concentration of 2000 particles per mL. A magnetic stir bar is included in each bottle for clean, convenient and direct sampling by instruments. This series of size standards is provided for setting or checking the calibration of channel thresholds or for checking the count precision of liquid-borne particle counters. Their certified diameters are traceable to NIST. They are packaged as 100mL screw-cap bottles, sufficient for four or five calibration procedures on most counters. The microspheres are composed of polystyrene, which has an index of refraction of 1.59 @ 589nm and a density of 1.05 g/cm3. The aqueous suspension medium contains a combination of dispersing agents, which help to keep the particles from clumping or sticking to flow surfaces in the particle counter. The EZY-CAL™ product line meets all of the unique and demanding requirements of the contamination control laboratory in modern industries.
  • Fluoro-Max™
  • Fluoro-Max™
  • Fluoro-Max™
  • Fluoro-Max™
  • Fluoro-Max™
  • Fluoro-Max™
  • Achieve maximum reactivity in many diagnostic applications with Thermo Scientific™ Opti-Bind™ Polystyrene Sulfate Particles for use in turbidimetric/nephelometric assays, slide agglutination assays, chemiluminescent assays and in clinical diagnostics and molecular biology applications. Particles can be used direct from the bottle, without any pre-cleaning. Our production does not utilize common surfactants (like SDS, Tween™ 20, Triton™ X-100) that can interfere with protein binding to particle surfaces. Polystyrene surfaces are very hydrophobic and adsorb proteins almost instantaneously. Thermo’s proprietary anionic surfactant does not interfere with the binding of proteins or cause proteins to desorb from microparticle surfaces. • Available in a wide range of diameters (from 0.1 μm to 2.5 μm) • No pre-washing • Tight size distribution—CV<2% • Optimized colloidal stability
  • Achieve maximum reactivity in many diagnostic applications with Thermo Scientific™ Opti-Bind™ Polystyrene Sulfate Particles for use in turbidimetric/nephelometric assays, slide agglutination assays, chemiluminescent assays and in clinical diagnostics and molecular biology applications. Particles can be used direct from the bottle, without any pre-cleaning. Our production does not utilize common surfactants (like SDS, Tween™ 20, Triton™ X-100) that can interfere with protein binding to particle surfaces. Polystyrene surfaces are very hydrophobic and adsorb proteins almost instantaneously. Thermo’s proprietary anionic surfactant does not interfere with the binding of proteins or cause proteins to desorb from microparticle surfaces. • Available in a wide range of diameters (from 0.1 μm to 2.5 μm) • No pre-washing • Tight size distribution—CV<2% • Optimized colloidal stability
  • A validation for the performance of liquid particle counters with Thermo Scientific™ Validex™ Count Precision Size Standards. Excellent for instrument calibration and verification in the drinking water industry and for low level liquid particle counting and calibration. This product contains NIST™-traceable polymer particles packaged in ultrapure water at concentrations ideal for use in validating the performance of liquid particle counters. Particle counting in the drinking water industry has rapidly become an indispensable technology for optimizing water quality. The majority of particle counters used in the drinking water industry operate on the principle of single particle light obscuration.
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