Absorption pad for immunoassay, strip for immunoassay, and immunoassay apparatus
View Patent ↗Providing an absorption pad which shows remarkable water absorptivity and can shorten a detection time when employed for an immunoassay apparatus. A water absorption pad for the immunoassay apparatus, containing 50% by weight or more of silicon-containing particles wherein a moisture absorptivity is 30% or less at a humidity of 60% or less and a moisture absorptivity is 40% or more at a humidity of 90% or more, a strip for an immunoassay using said absorption pad as a suction part, and an immunoassay apparatus including said strip for the immunoassay.
1. An absorption pad for an immunoassay comprising 50% by weight or more of silicon-containing particles, the silicon-containing particles having a moisture absorptivity of 30% or less at a humidity of 60% or less and a moisture absorptivity of 40% or more at a humidity of 90% or more.
2. The absorption pad for an immunoassay according to claim 1 , wherein said silicon-containing particle is silica gel.
3. A strip for an immunoassay for detecting an antigen and/or antibody in a specimen by an antigen-antibody reaction, comprising:
a labeled form-containing part including a labeled form of an antibody and/or antigen corresponding to the antigen and/or antibody to be detected; and
a suction part composed of the absorption pad according to claim 1 .
4. The strip for an immunoassay according to claim 3 further comprising a substrate-containing part including a substrate to said labeled form.
5. The strip for the immunoassay according to claim 4 wherein said substrate-containing part is located on another end to one end where the suction part is annexed and said labeled form-containing part is located between the substrate-containing part and the suction part.
6. An immunoassay apparatus for measuring an antigen and/or antibody in a specimen by an antigen-antibody reaction, comprising the strip for the immunoassay according to claim 3 .
7. The immunoassay apparatus according to claim 6 further comprising a developing buffer supply part for supplying a developing buffer to said strip.
8. A pad comprising
a material comprising a natural or synthetic polymer compound, and
silicon-containing particles in an amount of 50% by dry weight or more;
wherein the silicon-containing particles have a moisture absorptivity of 30% or less at a humidity of 60% and a moisture absorptivity of 40% or more at a humidity of 90% or more.
9. The pad of claim 8 , wherein the material comprising a natural or synthetic polymer is a porous material containing polyvinyl alcohol.
10. The pad of claim 8 , wherein the material comprising a natural or synthetic polymer is nonwoven.
11. The pad of claim 8 , wherein the material comprising a natural or synthetic polymer contains cellulose.
12. The pad of claim 8 , wherein the material comprising a natural or synthetic polymer is a sponge or filter paper.
13. The pad of claim 8 , wherein the silicon particles have a moisture absorptivity of 20% or less at a humidity of 60% or less.
14. The pad of claim 8 , wherein the silicon particles have a moisture absorptivity of 70% or less at a humidity of 95% or more.