The present disclosure relates to mobile electronic devices including at least one transparent display screen for comparing and accurately determining the color of a predetermined object for color and texture application. In addition, the present disclosure provides color analysis and control using an electronic mobile device transparent display screen, for a wide variety of applications, including, but not limited to color, shade and coating defect identification applications, including augmented reality applications. Color data for a perceived color stores in a memory and displays images as perceived through the transparent display screen. Image difference values are determined between a first set of optical processing data and a second set of optical processing data. The transparent display screen indicates image difference values from including differences in color, texture, transparency, lighting, etc., especially for augmented reality applications. The optical lens captures an image of an object for display on the transparent display screen.

In the field of monitoring air quality, and more specifically, the field of identification of the presence of gaseous chemical pollutants such as volatile organic compounds, in an enclosed environment, there is disclosed a system including: a substrate; a gaseous chemical pollutant sensor; and at least one colorimetric marker of a predetermined colour situated on the substrate.

A urine screen and urine analysis method for analyzing urine color to determine the hydration level of an individual. The urine screen is nonabsorbent. The urine screen includes a base member, a urinal dish, and a color scale. The urinal dish has a side wall that extends from the front side of the base member. The urinal dish is open at the top portion and is able to receive fluid into the urinal dish through the open top portion. The urinal dish includes a small drain hole. The color scale is applied to the front side of the base member and includes at least a plurality of shades of yellow. Each of the shades of yellow corresponds to a hydration level based on urine color.

A system, method and assembly for performing traffic sign inspections is provided. In one embodiment, the assembly includes a first plurality of sheetings that each have a combination of retroreflectivity and color that is different from the combination of retroreflectivity and color of each of the other first plurality of sheetings; a first clamp and second clamp for clamping one of said first plurality of sheetings to a traffic sign; a first handheld light source; and a first enclosure for removably housing the first plurality of sheetings, said first and second clamps, and said first handheld light source. The assembly may further include a second enclosure for removably housing a second plurality of sheetings that each has a combination of retroreflectivity and color that is different from the combination of retroreflectivity and color of each of the other second plurality of sheetings.

A urine screen and urine analysis method for analyzing urine color to determine the hydration level of an individual. The urine screen is nonabsorbent. The urine screen includes a base member, a urinal dish, and a color scale. The urinal dish has a side wall that extends from the front side of the base member. The urinal dish is open at the top portion and is able to receive fluid into the urinal dish through the open top portion. The urinal dish includes a small drain hole. The color scale is applied to the front side of the base member and includes at least a plurality of shades of yellow. Each of the shades of yellow corresponds to a hydration level based on urine color.

A wipe for detecting the presence of an explosive substance is composed of an absorbent or adsorbent substrate and a chemical detection solution impregnated within the substrate. In one embodiment the chemical detection solution includes a combination of reagents operable, when contacted with a particular explosive substance to undergo a chemical reaction or a series of chemical reactions to produce a compound having a visible color. In another embodiment, the chemical detection solution includes a redox color indicating agent that is operable to exhibit a color change upon reacting with the explosive substance.

The present disclosure relates to mobile electronic devices including at least one transparent display screen for comparing and accurately determining the color of a predetermined object for color and texture application. In addition, the present disclosure provides color analysis and control using an electronic mobile device transparent display screen, for a wide variety of applications, including, but not limited to color, shade and coating defect identification applications, including augmented reality applications. Color data for a perceived color stores in a memory and displays images as perceived through the transparent display screen. Image difference values are determined between a first set of optical processing data and a second set of optical processing data. The transparent display screen indicates image difference values from including differences in color, texture, transparency, lighting, etc., especially for augmented reality applications. The optical lens captures an image of an object for display on the transparent display screen.

A system and method is provided for detection at least one of nitrite (NO2), nitric oxide (NO), nitrogen dioxide (NO2), and other nitrogen oxides (NO.sub.x) on a substrate, such as skin. According to one aspect, a diagnostic device for measuring a concentration of at least one of nitrite (NO2), nitrogen dioxide (NO2), nitric oxide (NO), and other nitrogen oxides (NO.sub.x) on a substrate comprises a patch comprising at least one chemical compound capable of reacting with the at least one of nitrite, nitrogen dioxide, nitric oxide, and other nitrogen oxides to provide an indicator.

Methods and kits for detection of alkylating agents are described. The present invention discloses methods and kits comprising sensors for the rapid detection of chemical agents (e.g., alkylating agents) at low concentrations. The methods are useful for the detection of alkylating agents such as field fumigants such as methyl bromide or methyl iodide. The detection can advantageously be performed by a change in light absorbance of the sensor moiety using the naked eye.

A wipe for detecting the presence of an explosive substance is composed of an absorbent or adsorbent substrate and a chemical detection solution impregnated within the substrate. The chemical detection solution includes a redox color indicating agent that is operable to exhibit a color change upon reacting with the explosive substance.