The instant application pertains to a process for improving or managing the recycling of monoethylene glycol from an oil and gas operation with more efficient and cost-effective monitoring. The process comprises repeatedly testing an aqueous solution comprising monoethylene glycol using a test strip to obtain results for various known parameters. The results can be calibrated versus the known parameters to determine an adjustment to the test strip result.

A device configured to provide a value indicative of fluorescent emission from a substrate 5 having a test region is provided. The device comprises an electromagnetic radiation source configured to emit excitation radiation towards the test region to excite fluorescent emission from a fluorescent material in the test region. The electromagnetic radiation source is configured such that a variation in intensity of the excitation radiation across the test region is less than 15%. The device further comprises a sensor configured to capture a primary 10 image of the fluorescent emission, and a controller configured to modify the primary image based on calibration data and to use the modified image to obtain the value indicative of the fluorescent emission.

Provided are methods and systems that relate to configuring a handheld analyzer. The handheld analyzer may receive an identifier from a dual design test cartridge. The parameter module disposed within the handheld analyzer may determine parameters corresponding to the received test cartridge identifier. The parameter module may then configure the handheld analyzer to perform a test with the dual designed test cartridge using the determined parameters. In an embodiment, the diagnostic test module may determine the test corresponding to the received cartridge identifier and the diagnostic test module configures the handheld analyzer to perform the determined test with the test cartridge. In another embodiment, the dual test cartridge comprises an outer enclosure and an inner enclosure. The outer enclosure comprises a parameter module capable of storing test cartridge identification and may be reused to store new test identifications.

A method of evaluating the quality of a color reference card having multiple color reference fields. The quality refers to whether the color reference card is usable for a method for determining concentration of analyte in a body fluid and/or to the degree of suitability or reliability of the color reference card for use with a method for determining analyte concentration in a body fluid. In the inventive method, an image is captured of at least a part of the color reference card using a mobile device camera. Measured color reference values are determined from the image for one or more of the color reference fields and a relationship between one or more of the measured reference color values and corresponding known reference color values is determined. The determined relationship is used to assess the quality of the color reference card. A kit and mobile device are also disclosed.

The present disclosure relates to water dispersible or soluble diagnostic assay methods, devices, kits, and methods of manufacture.

A detection device (10), comprising a sample detection layer (1) provided thereon with a detection reagent reacted with an analyte and a result display region (18), wherein the device further comprises a symbol display layer (2) on which an indicator (21) is processed; after the indicator contacts with a gas which can change the color of the indicator, the indicator changes from a first color to a second color.

The invention provides a device for detecting an analyte in a liquid sample. The device comprises a receiving chamber for receiving an absorbent element, wherein the absorbent element is used for collecting a liquid sample; and a detection chamber configured to receive a testing element, wherein the testing element is set to test an analyte in a liquid sample, the receiving chamber is provided with a first position and a second position, when the receiving chamber is located at the first position, the receiving chamber is not in fluid communication with the detection chamber, and when the receiving chamber is located at the second position, the receiving chamber is in fluid communication with the detection chamber.

The present invention provides a device for detecting whether an analyte is contained in a fluid sample; the device includes an absorbing element used for absorbing the fluid sample and a testing element, and fluidic communication between the testing element and the absorbing element may be controlled. By means of such a test device, quantitative detection can be achieved, and the liquid sample on the absorbing element can be prevented from flowing onto the testing element in advance to start test at the same time.

Descriptions of cosmetic items with personal safety devices are disclosed herein. In some embodiments, the cosmetic items hold personal beautification products such as makeup. In some embodiments, in addition to makeup, the cosmetic items also include a testing assembly which indicates the presences of specific chemicals mixed in liquids such as alcohol or water. In some embodiments, the cosmetic item includes a computer code trigger which initiates an emergency system. In various embodiments the computer code trigger takes the form of a button or printed computer code, and may include a wireless transmitter for sending signals to one or more computers.

Method and compositions using transition metal salts and/or ammonium chloride to liberate toxins and other molecules from cyanobacteria, useful for assaying for total cyanobacterial toxins in lakes, reservoirs and other waters.