A component measurement apparatus has a chip insertion space configured to receive a component measurement chip provided with a reagent that reacts with a component to be measured in a sample, and includes: a light emitting unit configured to emit radiation light; a light receiving unit configured to receive the radiation light or light acquired by the radiation light transmitting through or being reflected from the component measurement chip; and a control unit configured to measure the component to be measured in the sample using an actual measurement value of an intensity of received light in the light receiving unit. The control unit is configured such that, when the component measurement chip is inserted into the chip insertion space, the control unit adjusts an amount of the radiation light emitted from the light emitting unit to a predetermined amount of light used in the measurement of the component.

A soil moisture indicator contains a water-absorbing material and a color-changing part. A body part is formed and hollow by a material through which water does not pass, and has a water-absorbing opening proximate one end and a transpiration opening positioned near the other end. A display part is connected to the other end of the body part and allows an inner hollow portion to be viewed. An upper-end part that constitutes the end portion of the display part can be removed from and connected to the display part at the end portion on the opposite side to the end portion connected to the body. There is a change in color tone indication between a water-absorbed state and a dry state.

A system for monitoring an analyte concentration in liquid is provided. The system includes a coupon comprising an absorbent body with a window through the absorbent body wherein the liquid is maintained in said window by capillary action and surface tension. A reactant is in the absorbent body wherein the reactant is capable of diffusing into the window to react with an analyte in the liquid, or the reactant is able to react with the analyte within the coupon itself, with color-indicating by-products of the reaction diffusing into the window, wherein the analyte is present in an analyte concentration, to form a reactant with a color wherein the color has an intensity which correlates to the analyte concentration. A light source is provided which is capable of passing light into the window wherein the light is attenuated by the color proportional to the analyte concentration to form attenuated light. A detector is provided which is capable measuring an intensity of the attenuated light. Alternatively, the color change can be read by eye and compared to a color chart relating the color to an analyte concentration.

Provided herein are methods of determining molecular binding kinetics on particles, such as magnetic nanoparticles. In some embodiments, the methods include introducing an incident light from a light source toward a sample container that comprises a particle-bound biomolecule-ligand composition comprising a plurality of particle-bound biomolecules and a plurality of ligands that binds, or is capable of binding, to biomolecules of the plurality of particle-bound biomolecules, detecting light scattered from particle-bound biomolecule-ligand complexes in the particle-bound biomolecule-ligand composition over a duration to produce a set of imaging data using the detector, and determining size or volume changes of one or more of the particle-bound biomolecule-ligand complexes during at least a portion of the duration from the set of imaging data to thereby determine the molecular binding kinetics on the particles. Related systems and computer readable media are also provided.

A system for monitoring an analyte concentration in liquid is provided. The system includes a coupon comprising an absorbent body with a window through the absorbent body wherein the liquid is maintained in said window by capillary action and surface tension. A reactant is in the absorbent body wherein the reactant is capable of diffusing into the window to react with an analyte in the liquid, or the reactant is able to react with the analyte within the coupon itself, with color-indicating by-products of the reaction diffusing into the window, wherein the analyte is present in an analyte concentration, to form a reactant with a color wherein the color has an intensity which correlates to the analyte concentration. A light source is provided which is capable of passing light into the window wherein the light is attenuated by the color proportional to the analyte concentration to form attenuated light. A detector is provided which is capable measuring an intensity of the attenuated light. Alternatively, the color change can be read by eye and compared to a color chart relating the color to an analyte concentration.

The application relates to a method and device for quantitatively analyzing the detection results of lateral flow-type test kits. Disclosed is a method for quantitatively analyzing the test results of a lateral flow-type test kit wherein the test kit includes a result area in which a control C-line region and a detection T-line region are set. The method includes: determining an analyte concentration range that the test kit can detect; diluting a sample into a plurality of sample dilutions having different pre-determined analyte concentrations within the determined analyte concentration range; applying each sample dilution having a pre-determined analyte concentration to a sampling well on the rapid test kit for the analyte, so as to obtain separate resulting images with different color intensities on the T-line region corresponding to different pre-determined analyte concentrations; calculating a corresponding color intensity index values for the T-line regions of each resulting image, respectively; and creating a continuous curve by fitting the corresponding plurality of color intensity index values to the plurality of different pre-determined analyte concentrations, wherein the corresponding analyte concentration can be obtained based on the color intensity index value at any point on the continuous curve.

Analyte testing devices, assemblies, methods, operations, and systems are shown and described. In one embodiment, an apparatus to generate a test result from an assay when contacted with a sample includes a non-planar optics module to align the assay in an offset testing position. A modular interface assembly may support a motherboard and at least one non-planar optics module.

A test element analysis system for analytical examination of a sample. The system comprises a measurement device, which comprises a test element receptacle for receiving at least one test element at least partially, wherein the receptacle comprises at least one first and at least one second part, wherein the first part comprises at least one support surface for placement of the test element, wherein the second part comprises at least one optical detector for detecting at least one detection reaction of at least one test chemical contained in the test element, wherein the second part is movable relative to the first part, wherein the receptacle is configured to position the second part such that a test element may be inserted into the receptacle and to subsequently position the second part in a closed position such that at least one abutment surface of the second part rests on the test element.

A system for monitoring an analyte concentration in liquid is provided. The system includes a coupon comprising an absorbent body with a window through the absorbent body wherein the liquid is maintained in said window by capillary action and surface tension. A reactant is in the absorbent body wherein the reactant is capable of diffusing into the window to react with an analyte in the liquid, or the reactant is able to react with the analyte within the coupon itself, with color-indicating by-products of the reaction diffusing into the window, wherein the analyte is present in an analyte concentration, to form a reactant with a color wherein the color has an intensity which correlates to the analyte concentration. A light source is provided which is capable of passing light into the window wherein the light is attenuated by the color proportional to the analyte concentration to form attenuated light. A detector is provided which is capable measuring an intensity of the attenuated light. Alternatively, the color change can be read by eye and compared to a color chart relating the color to an analyte concentration.

A diagnostic device for analysing properties of an analyte in a sample liquid including: a distribution zone having at least two hydrophilic layers placed one on top of the other, wherein one layer is a top layer (12) and the other is a bottom layer (13); and a detection zone located under the distribution zone, the detection zone having a detection layer (14), wherein: the top layer has one or more openings (15) through which the sample liquid is introduced into the device; the bottom layer having one or more openings (16) connecting the distribution zone to the detection zone; the bottom layer also having a means by which the sample liquid is distributed from the top layer's opening to the detection layer through the bottom layer's opening; and a visual indication results on the detection layer when the sample liquid comes into contact with the detection layer.