A clothing cuff clip attachable to an article of clothing, especially a pants leg cuff, to gather and lift the clothing up from an adjacent surface and provide a barrier between the surface and the clothing item being worn. The clothing cuff clip is inexpensive to manufacture and may be disposable after extended use. The clip is easy to attach to the lower back edge of the pants leg cuff on the item of clothing being worn and yet remains securely attached even after extended use. Optionally, a contamination indicator that changes in appearance when subjected to significant moisture, a change in pH, or the presence of a selected contaminant material, is positioned on the lower floor contact area of the clip to provide the wearer with an indication of when the clip, and therefore the item of clothing, has come into contact with contaminated materials.

A clothing cuff clip attachable to an article of clothing, especially a pants leg cuff, to gather and lift the clothing up from an adjacent surface and provide a modest barrier between the surface and the clothing item being worn. The clothing cuff clip is inexpensive to manufacture in large quantities and may be disposable after extended use. The clip is easy to attach to the lower back edge of the pants leg cuff on the item of clothing being worn and yet remains securely attached even after extended use. Optionally, a contamination indicator that changes in appearance when subjected to significant moisture, a change in pH, or the presence of a selected contaminant material, is positioned on the lower floor contact area of the clip to provide the wearer with an indication of when the clip, and therefore the item of clothing, has come into contact with contaminated materials.

A method for determining the presence of an acidic sulfide species in a liquid sample of an industrial or environmental material. The method includes the step of contacting the sample or an extract thereof with a composition including a metal complex dye compound in which the electromagnetic absorption spectrum of the metal complex dye compound changes upon reaction with an acidic sulfide species.

A method according to an embodiment of the present invention includes acquiring an image of a urine test kit equipped with a biochemical sample rod including a plurality of pad cells including a plurality of sub-pad cells, extracting at least one potential RGB value from the image by means of a potential color extractor, and converting and analyzing the at least one potential RGB value using a plurality of color spaces included in a color space conversion engine and a color space analysis engine by means of an analyzing unit. The plurality of color spaces are randomly generated, and a color space having a smallest distance value from the potential RGB value is determined as an optimal color space.

In one embodiment the present invention describes a test kit for detecting arsenic concentration in a sample. The test kit includes a stable bromide compound capable of being made into a solution comprising bromine, a dye, wherein the bromine to the dye ratio is in a range from about 4:1 to about 5:1, an acid, and a quantification system for detecting the concentration of arsenic in the sample. In another embodiment the present invention describes a test kit for detecting a concentration of up to 0.03 parts per million of arsenic in a sample. A method of using the test kit to detect concentration of arsenic in a sample is also described.

Embodiments of the invention comprise a test strip configured to detect one or more metabolites of progesterone in urine, and optionally further detect one or more additional metabolites or hormones in urine within the same test strip. Embodiments of the invention are methods of utilizing such a test strip in association with avoidance of pregnancy, detection of menopause, and in association with fertility planning purposes. Embodiments of the invention are associated with the incorporation of a test strip within a testing kit, optionally further comprising a digital reader.

An example peripheral device to be placed over an image sensor and a light source of a portable computing device to assist the portable computing device in reading a reaction area on a test strip in the peripheral device is disclosed. The peripheral device includes a light guide to direct light from the light source to the test strip, and an alignment feature to aid placement of the peripheral device relative to the image sensor and the light source on the portable computing device.

A system for urine analysis and personal health monitoring includes a testing box, including a testing chamber, a camera aperture, a visual check aperture, and a test slot, an interchangeable color pattern chart, including a bar code, a base color calibration strip, a test result area, and a test lookup area; a diagnostic analysis server, and a diagnostic analysis device, including a processor, a diagnostic manager, a camera manager, an image analyzer, a camera calibrator, and a camera; such that the diagnostic analysis device captures an original image of the testing chamber interior with a test strip inserted, and analyzes a diagnostic portion of the original image and calculates a test result. Also disclosed is a method for diagnostic analysis, including installing interchangeable color pattern chart, depositing sample, inserting test strip, capturing image, performing color calibration, reading bar code, extracting test strip image, performing color conversion, and calculating test result.

In a method for evaluating tantalum carbide, a carbonization degree of tantalum carbide is evaluated by chromaticity.

A wearable pollutant indicator, methods of making and using same. The indicator includes a polymeric film substrate having a first side and a second side, an adhesive disposed on the first side of the substrate, and a readily understood user interface disposed on the second side of the substrate, wherein the user interface comprises a qualitative indicator of the accumulated exposure to incident airborne particulate pollution as sensed through the reaction of the transition metal oxides therein.