Methods, apparatuses, and kits for detection of substances in water by forming a complex with an indicator reagent and filtering the complex on a filter or membrane are described. The concentrated indicator on the filter, membrane or other capture device provides a colorimetric readout that can determine the amount of substance present in a water sample. A computer-implemented method for determining the concentration of substances in water based on color data from the colorimetric readout is also described.

A method for determining the asphaltene content of oil includes obtaining an oil sample, determining an optical spectrum of the oil sample and removing asphaltenes from the oil sample by precipitating asphaltenes using a first alkane precipitant. The method also includes determining an optical spectrum of maltenes of the oil sample and subtracting the optical spectrum of the maltenes of the oil sample from the optical spectrum of the oil sample to yield an optical spectrum of asphaltenes of the oil sample. The method further includes using the optical spectrum of asphaltenes of the oil sample to determine asphaltene content of the oil sample using a second alkane precipitant.

A method for determining the asphaltene content of oil includes obtaining an oil sample, determining an optical spectrum of the oil sample and removing asphaltenes from the oil sample by precipitating asphaltenes using a first alkane precipitant. The method also includes determining an optical spectrum of maltenes of the oil sample and subtracting the optical spectrum of the maltenes of the oil sample from the optical spectrum of the oil sample to yield an optical spectrum of asphaltenes of the oil sample. The method further includes using the optical spectrum of asphaltenes of the oil sample to determine asphaltene content of the oil sample using a second alkane precipitant.

A tool for use in a borehole in a geological formation may include a chassis, a drill collar surrounding the chassis, a port plug coupled between the drill collar and the chassis, RF antennas carried by the drill collar, and a multi-chip module (MCM) electronics package(s). The electronics package(s) may include a hermetically sealed electronics housing positioned between the chassis and the drill collar, a substrate within the electronics housing, RF transmitter circuitry on the substrate to cooperate with at least one first RF antenna to transmit RF signals into the geological formation, and RF receiver circuitry on the substrate to cooperate with at least one second RF antenna to receive RF signals from the geological formation. Furthermore, an electronics housing mount may couple the electronics housing with the port plug, and the electronics housing mount may have a passageway extending therethrough for receiving the port plug.

A tool for use in a borehole in a geological formation may include a chassis, a drill collar surrounding the chassis, a port plug coupled between the drill collar and the chassis, RF antennas carried by the drill collar, and a multi-chip module (MCM) electronics package(s). The electronics package(s) may include a hermetically sealed electronics housing positioned between the chassis and the drill collar, a substrate within the electronics housing, RF transmitter circuitry on the substrate to cooperate with at least one first RF antenna to transmit RF signals into the geological formation, and RF receiver circuitry on the substrate to cooperate with at least one second RF antenna to receive RF signals from the geological formation. Furthermore, an electronics housing mount may couple the electronics housing with the port plug, and the electronics housing mount may have a passageway extending therethrough for receiving the port plug.

Shielded probe systems are disclosed herein. The shielded probe systems are configured to test a device under test (DUT) and include an enclosure that defines an enclosure volume, a translation stage with a stage surface, a substrate-supporting assembly extending from the stage surface, an electrically conductive shielding structure, an isolation structure, and a thermal shielding structure. The substrate-supporting assembly includes an electrically conductive support surface, which is configured to support a substrate that includes the DUT. The electrically conductive shielding structure defines a shielded volume. The isolation structure electrically isolates the electrically conductive shielding structure from the enclosure and from the translation stage. The thermal shielding structure extends within the enclosure volume and at least partially between the enclosure and the substrate-supporting assembly.

An embodiment provides a method for measuring ions in a solution, including: preparing a measurement device comprising an active indicator, wherein the active indicator comprises a silver complex; introducing the measurement device to a solution, wherein the silver complex reacts with the solution and generates a precipitation comprising one of the elements selected from the group consisting of: silver chloride, silver sulfide, and mixtures thereof; and measuring an amount of one of the elements selected from the group consisting of: chloride and sulfide, in the solution, wherein the measuring comprises identifying a peak of the precipitation on a portion of the measurement device and comparing the peak to a measurement chart.

An embodiment provides a method for measuring ions in a solution, including: preparing a measurement device comprising an active indicator, wherein the active indicator comprises a silver complex; introducing the measurement device to a solution, wherein the silver complex reacts with the solution and generates a precipitation comprising one of the elements selected from the group consisting of: silver chloride, silver sulfide, and mixtures thereof; and measuring an amount of one of the elements selected from the group consisting of: chloride and sulfide, in the solution, wherein the measuring comprises identifying a peak of the precipitation on a portion of the measurement device and comparing the peak to a measurement chart.

Methods, apparatuses, and kits for detection of substances in water by forming a complex with an indicator reagent and filtering the complex on a filter or membrane are described. The concentrated indicator on the filter, membrane or other capture device provides a colorimetric readout that can determine the amount of substance present in a water sample. A computer-implemented method for determining the concentration of substances in water based on color data from the colorimetric readout is also described.

A battery sensor assembly (10) is provided with a positioner (11) and a battery sensor (1). The positioner (11) is provided with a sensor-fixing part (29) for fixing the battery sensor (1) and a rotation-blocking part (31) capable of coming in contact with a side surface (2b) of a battery (2). The sensor-fixing part (29) is provided with a fitting section (30). The fitting section (30) allows a casing (8) of the battery sensor (1) to be inserted from a prescribed insertion direction and fits to the inserted battery sensor (1). Additionally, the rotation-blocking part (31) is provided with a reinforcement rib.