Analytical element
First Claim
1. An analytical element comprising a light-transmissive and liquid-impervious support having thereon, in order from the support side, at least one reagent layer containing at least one kind of reagent reactive with a component in a fluid sample, a shielding layer and at least one porous spreading layer, said shielding layer comprising at least a white pigment and substantially water-dispersible reactive polymer which comprises a copolymer having (i) monomeric units which have a reactive group and (ii) at least one kind of hydrophobic monomer which is not said monomeric units (i).
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Abstract
An analytical element comprising a light-transmissive and liquid-impervious support having thereon, in order from the support side, at least one reagent layer containing at least one kind of reagent reactive with a component in a fluid sample, a shielding layer and at least one porous spreading layer, said shielding layer comprising at least a white pigment and a substantially water-dispersible reactive polymer which comprises a copolymer having (i) monomeric units which have a reactive group and (ii) at least one kind of other hydrophobic monomer.
25 Citations
12 Claims
- 1. An analytical element comprising a light-transmissive and liquid-impervious support having thereon, in order from the support side, at least one reagent layer containing at least one kind of reagent reactive with a component in a fluid sample, a shielding layer and at least one porous spreading layer, said shielding layer comprising at least a white pigment and substantially water-dispersible reactive polymer which comprises a copolymer having (i) monomeric units which have a reactive group and (ii) at least one kind of hydrophobic monomer which is not said monomeric units (i).
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7. The analytical element according to claim 7, wherein said shielding layer consists 60 to 98% by weight of a white pigment and 2 to 40% by weight of a substantially water-dispersible reactive polymer.
Specification