Product Information
Medical Field
Raw Materials for Diagnostic Reagents: Polystyrene Latex Particles for Diagnostic Reagents
Our lineup of latex particles for in vitro diagnostic reagents includes both plain and carboxy-modified types.
Using the particle size control technology we have developed over many years, we are able to meet a wide range of needs, from diameters commonly used in diagnostic reagents (approx. 100–400 nm) to custom micron-sized particles.
Product Characteristics
High lot reproducibility
Versatile surface design
We can offer a wide range of specially designed particles, from soap-free types to highly hydrophilic types, to suit custom requirements.
Extensive manufacturing expertise from small lots to large-scale production (100 mL to 400 L per lot)
Plain Polystyrene Latex Particles
Custom sizes outside catalog product specifications can be made your requirements.
Please feel free to contact us with your inquiries.
| Product code | Mean particle diameter (nm) |
|---|---|
|
FK-S100D FK-S120D FK-S140D FK-S160D FK-S180D FK-S200D FK-S250D FK-S300D FK-S350D FK-S400D |
90~110 110~130 130~150 150~170 170~190 190~210 240~260 280~320 330~370 380~420 |
Carboxy-modified Polystyrene Latex Particles
We offer three lines with different dispersion characteristics.
| D type product codes | E type product codes | N type product codes | Mean particle diameter (nm) |
|---|---|---|---|
|
FK-C100D FK-C120D FK-C140D FK-C160D FK-C180D FK-C200D FK-C250D FK-C300D FK-C350D FK-C400D |
FK-C100E FK-C120E FK-C140E FK-C160E FK-C180E FK-C200E FK-C250E FK-C300E FK-C350E FK-C400E |
FK-C100N FK-C120N FK-C140N FK-C160N FK-C180N FK-C200N FK-C250N FK-C300N FK-C350N FK-C400N |
90~110 110~130 130~150 150~170 170~190 190~210 240~260 280~320 330~370 380~420 |
Latex solution coated to a glass slide and dried, then a water droplet is placed on the dried surface and the contact angle is measured.
Raw Materials for Diagnostic Reagents: Functional Particles
Fluorescent Particles
Fluorescent particles that use a europium complex as a fluorescent dye.
Their surface functional groups are carboxyl (COOH) groups, allowing covalent coupling with proteins.
| Product name | Mean particle diameter (nm) |
|---|---|
|
FK-Eu100 FK-Eu200 FK-Eu300 |
90～110 180~220 270~330 |
Magnetic Particles (Product Under Development)
We are currently developing magnetic particles with high magnetic collectability and redispersibility.
| Physical properties (example) | |
|---|---|
|
Particle diameter Surface functional groups Latex concentration Form |
2.5 μm Carboxyl groups 2 wt% Aqueous dispersion |
About the Division
For an introduction to the business division, its strategies, and where its products are used, please refer to the business overview page.
