ANALYTICAL TEST STRIPS
First Claim
1. An analytical test strip comprising:
- a substrate; and
a reagent layer disposed on a portion of the substrate, the reagent layer including an enzymatic reagent ink comprising;
an amount of hydrophobic silica material;
an amount of surfactant; and
an amount of enzyme,wherein the amounts of the hydrophobic silica material and the surfactant in the enzymatic reagent ink is predetermined using;
a first relationship between wetability of a representative hydrophobic silica material and at least a first calibration characteristic of an analytical test strip that includes an enzymatic reagent ink containing the representative hydrophobic silica material, the first relationship defining a minimum wetability that provides an acceptable first calibration characteristic; and
a second relationship defining wetability of a mixture of the hydrophobic silica material and the surfactant across a range of relative amounts of the hydrophobic silica material and the surfactant,such that the amounts of the hydrophobic silica material and the surfactant provide at least the minimum wetability defined by the first relationship during manufacturing of the enzymatic reagent ink.
1 Assignment
0 Petitions
Accused Products
Abstract
An analytical test strip includes a substrate and a reagent layer disposed on a portion of the substrate. The reagent layer includes an enzymatic reagent ink comprising an amount of hydrophobic silica material, an amount of surfactant; and an amount of enzyme. The amounts of the hydrophobic silica material and the surfactant in the enzymatic reagent ink is predetermined using a first relationship and a second relationship. The first relationship is between wetability of a representative hydrophobic silica material and at least a first calibration characteristic of an analytical test strip that includes an enzymatic reagent ink containing the representative hydrophobic silica material. In addition, the first relationship defines a minimum wetability that provides an acceptable first calibration characteristic. The second relationship defines wetability of a mixture of the hydrophobic silica material and the surfactant across a range of relative amounts of the hydrophobic silica material and the surfactant. The predetermined amounts of the hydrophobic silica material and the surfactant employed in the enzymatic reagent ink provide at least the minimum wetability defined by the first relationship during manufacturing of the enzymatic reagent ink and, therefore, an acceptable first calibration characteristic.
18 Citations
12 Claims
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1. An analytical test strip comprising:
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a substrate; and a reagent layer disposed on a portion of the substrate, the reagent layer including an enzymatic reagent ink comprising; an amount of hydrophobic silica material; an amount of surfactant; and an amount of enzyme, wherein the amounts of the hydrophobic silica material and the surfactant in the enzymatic reagent ink is predetermined using; a first relationship between wetability of a representative hydrophobic silica material and at least a first calibration characteristic of an analytical test strip that includes an enzymatic reagent ink containing the representative hydrophobic silica material, the first relationship defining a minimum wetability that provides an acceptable first calibration characteristic; and a second relationship defining wetability of a mixture of the hydrophobic silica material and the surfactant across a range of relative amounts of the hydrophobic silica material and the surfactant, such that the amounts of the hydrophobic silica material and the surfactant provide at least the minimum wetability defined by the first relationship during manufacturing of the enzymatic reagent ink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification