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Amidine Latex Beads, 4% w/v, 1.0 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This positively-charged hydrophobic amidine latex is particularly suited for the preparation of latex intermediates. The only surface functional group present on the particle is amidine, which is not sensitive to the aggregating effects of polyvalent cations. These particles are sensitive to negatively charged contaminants or multivalent anions. The amidine latexes should be used in low to neutral pH environments. The amidine group is a base and with a pK ~10-11.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

CML Latex Beads, 4% w/v, 0.1 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These carboxylate modified (CML) latex particles are produced by copolymerizing carboxylic acid containing polymers. The result is a latex polymer particle with a highly charged, relatively hydrophilic and somewhat 'fluffy' surface layer. The CML particles are electrosterically stabilized, and are therefore safe in concentrations of electrolyte up to 1M univalent salt. CML modified latex particles are negatively charged with a surface which has a polyelectrolyte character. It is only when the pH is ~10 that all the carboxyl groups are ionized. This is a hydrophilic latex.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

CML Latex Beads, 4% w/v, 0.04 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These carboxylate modified (CML) latex particles are produced by copolymerizing carboxylic acid containing polymers. The result is a latex polymer particle with a highly charged, relatively hydrophilic and somewhat 'fluffy' surface layer. The CML particles are electrosterically stabilized, and are therefore safe in concentrations of electrolyte up to 1M univalent salt. CML modified latex particles are negatively charged with a surface which has a polyelectrolyte character. It is only when the pH is ~10 that all the carboxyl groups are ionized. This is a hydrophilic latex.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Carboxyl Latex Beads, 4% w/v, 0.06 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

The carboxyl latex consists of carboxyl charge-stabilized hydrophobic polystyrene microspheres. Only carboxyl groups are present on the particle surface. The particles are the carboxyl analog of the sulfate latexes. The pKa of the carboxyl group is relatively high, and consequently these particles are not suitable for work in acidic media. IDC carboxyl latexes are available in a range of sizes and surface charge densities. They may be used either for physical adsorption of antigens or antibodies, or for covalent coupling of components to the particle surface.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Aldehyde/Sulfate Latex Beads, 4% w/v, 9 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This aldehyde/sulfate latex contains an abundance of aldehyde groups grafted to the surface of the polymer particle. The high density of aldehyde groups enables facile coupling of proteins and other materials to the latex particles in a one-step process. The sulfate charge groups on the microspheres enable retention of stability during the covalent coupling process. Due to the high density of polar groups, this latex has a hydrophilic surface.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Sulfate Latex Beads, 8% w/v, 0.02 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Chloromethyl Latex Beads, 4% w/v, 0.6 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

The chloromethyl latex has a high density of chloromethyl groups attached to the styrene monomeric unit. These reactive surface functional groups react directly with amino groups in antibodies, antigens, or other ligands under mild aqueous conditions to yield a stable covalent product by a one-step process. The particles are stabilized by negatively-charged sulfate groups. This type of particle can be used at both high and low pH conditions. This is a hydrophobic latex.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Aldehyde/Sulfate Latex Beads, 4% w/v, 1.0 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This aldehyde/sulfate latex contains an abundance of aldehyde groups grafted to the surface of the polymer particle. The high density of aldehyde groups enables facile coupling of proteins and other materials to the latex particles in a one-step process. The sulfate charge groups on the microspheres enable retention of stability during the covalent coupling process. Due to the high density of polar groups, this latex has a hydrophilic surface.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Sulfate Latex Beads, 8% w/v, 2 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Aldehyde/Sulfate Latex Beads, 4% w/v, 3 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This aldehyde/sulfate latex contains an abundance of aldehyde groups grafted to the surface of the polymer particle. The high density of aldehyde groups enables facile coupling of proteins and other materials to the latex particles in a one-step process. The sulfate charge groups on the microspheres enable retention of stability during the covalent coupling process. Due to the high density of polar groups, this latex has a hydrophilic surface.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Sulfate Latex Beads, 8% w/v, 0.8 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Aliphatic Amine Latex Beads, 2% w/v, 0.7 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This aliphatic amine latex has a high density of amine groups attached to the terminus of an aliphatic six-carbon spacer arm. This product can be used to covalently couple proteins. Location of the amine at the end of the spacer arm minimizes difficulties with steric hindrance and conformation since the group has a greater freedom to rotate. In addition, spacer arms improve the kinetics of latex agglutination reactions. The particles are stabilized by the positively-charged amine groups under low to neutral pH conditions. Care should be taken not to use them under high pH.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Sulfate Latex Beads, 8% w/v, 3 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Aliphatic Amine Latex Beads, 2% w/v, 2 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

This aliphatic amine latex has a high density of amine groups attached to the terminus of an aliphatic six-carbon spacer arm. This product can be used to covalently couple proteins. Location of the amine at the end of the spacer arm minimizes difficulties with steric hindrance and conformation since the group has a greater freedom to rotate. In addition, spacer arms improve the kinetics of latex agglutination reactions. The particles are stabilized by the positively-charged amine groups under low to neutral pH conditions. Care should be taken not to use them under high pH.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

Sulfate Latex Beads, 4% w/v, 5 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.