Grades of SEKSUI LATEX


1.	Characteristics
2.	Grade
3.	Application
4.	Antiseptics
5.	Storage
6.	Packages
7.	Catalog (pdf)
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Grades of SEKSUI LATEX
1.	Physical Adsorption Type This is a general purpose polystyrene latex that efficiently adsorb proteins such as antibody or antigen by a force attributed to the mutual hydrophobic property. There are two grades, General Purpose Grade and High Sensitivity Grade.
	1)	General Purpose Grade This is the standard latex that is used for a wide range of applications of physical adsorption. The particle diameter range is 0.05É m to 1.0É m.
	2)	High Sensitivity Grade This is suitable for highly sensitive diagnostic products. It enables to make diagnostic reagents that require smaller quantity of antibody/antigen and yet have the same level of reliability as those made of the general purpose latex.

Covalent Coupling Type
This is a polystyrene latex of which the surface of the particles are modified to have carboxyl group. Carbodiimide method or other well-known chemical methods can be used to make covalent bond with proteins such as antibody, antigen, or hapten.

Coloured Type
coloured type is a carboxyl-modified polystyrene latex that is coloured by a unique technology of Sekisui. There is very little chance of fading during storage or after being used for reagents. Two colours, red and blue are available.

Type of Latex	Physical Adsorption Type	Covalent Coupling Type	Coloured Type
Polymer	Polystyrene	Carboxy - modified Polystyrene	Carboxy - modified Polystyrene
Grades	General Purpose Grade High Sensitivity Grade		Blue Red
Range of Particle Size	0.05 to 1.0É m	0.1 to 0.4É m	0.1 to 0.4É m
Solid Content	10%	10%	1%

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